8 năm nữa 

16 năm sau

15 +))

15

mẹ bạn năm nay 39 tuổi

thiếu đề

22 năm+)

89-67=22 năm nữa bà tôi 89 tuổi

tick mk nha

tự biết 

a, gọi số tuổi của Uyên và Phúc 3 năm trước là a và b 

=> a+b=7

Vì hiện nay Uyên 5 tuổi nên : a+3=5 => a=2

Mà a+b=7 nên b=7-a=5

Vậy hiện nay Phúc b+3=8 tuổi 

b, Năm nay Phúc 10 tuổi thì : b+3=10 =>b=7

Mà a+b=7 nên a=7-b=0

=> Hiện nay Uyên a+3=3 tuổi 

Vậy Phú hơn Uyên : 10-3=7 tuổi 

dạ chào oog cháu xin trả lời 1+1=....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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1 + 1 = 2

Nội qui tham gia "Giúp tôi giải toán"

1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;

2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.

3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.

Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.

14

14 tuổi

tuoi cua em ban ki bn 2 tuoi la : 

            2:2=1 tuoi

nhu vay, bn hon em bn :

            2-1=1 tuoi 

vay khi bn 100 tuoi thi em bn :

            100-1=99 tuoi 

                    D/s: 99 tuoi 

đáp số hơi vô lí tôi chưa thấy 2 anh em mà kém nhau có đúng 1 tuổi