\(1111=1000+100+10+1=10^3+10^2+10^1+1\)

\(1247=1000+2\times100+4\times10+7=10^3+2\times10^2+4\times10^1+7\)

\(1543=1000+5\times100+4\times10+3=10^3+5\times10^2+4\times10^1+3\)

\(1794=1000+7\times100+9\times10+4=10^3+7\times10^2+9\times10^1+4\)

\(1876=1000+8\times100+7\times10+6=10^3+8\times10^2+7\times10^1+6\)

\(1008=1000+8=10^3+8\)

\(1080=1000+8\times10=10^3+8\times10^1\)

\(1709=1000+7\times100+9=10^3+7\times10^2+9\)

\(1500=1000+5\times100=10^3+5\times10^2\)

\(1097=1000+9\times10+7=10^3+9\times10^1+7\)

\(20000=2\times10000=2\times10^4\)

\(27000=2\times10000+7\times1000=2\times10^4+7\times10^3\)

\(28700=2\times10000+8\times1000+7\times100\)

\(24004=2\times10000+4\times1000+4=2\times10^4+4\times10^3+4\)

\(26013=2\times10000+6\times1000+1\times10+3=2\times10^4+6\times10^3+10^1+3\)

\(20508=2\times10000+5\times100+8=2\times10^4+5\times10^2+8\)

\(20358=2\times10000+3\times100+5\times10+8=2\times10^4+3\times10^2+5\times10^1+8\)

\(20009=2\times10000+9=2\times10^4+9\)

\(29830=2\times10000+9\times1000+8\times100+3\times10=2\times10^4+9\times10^3+8\times10^2+3\times10^1\)

\(25763=2\times10000+5\times1000+7\times100+6\times10+3=2\times10^4+5\times10^3+7\times10^2+6\times10^1+3\)

100 + 100 : 10 x 20 + 70 = 470

100 x 100 + 200 = 10 200

1111 + 1111 + 1111 + 1111+ 1111 + 1111 + 1111 + 1111 + 1111 + 1111 = 11 110

1111 x 10 = 11 110

Câu 1:100 + 100 :10 x 20 + 70=100+10x20+70=100+200+70=370

Câu 2:100 x 100+200=10 000+200=10 200

Câu 3:1111+1111+1111+1111+1111+1111+1111+1111+1111+1111=1111x10=11 110

Câu 4:1111x10=11 110

Nghĩ cái này nó cũng tựa tựa như vậy,ko biết có dùng được không:V

\(P=\dfrac{3^{1111}-6^{1111}+9^{1111}-12^{1111}+15^{1111}-18^{1111}+21^{1111}-24^{1111}}{-1+2^{1111}-3^{1111}+4^{1111}-5^{1111}+6^{1111}-7^{1111}+8^{1111}}\)

\(\dfrac{P}{3^{1111}}=\dfrac{3^{1111}-6^{1111}+9^{1111}-12^{1111}+15^{1111}-18^{1111}+21^{1111}-24^{1111}}{3^{1111}\left(-1+2^{1111}-3^{1111}+4^{1111}-5^{1111}+6^{1111}-7^{1111}+8^{1111}\right)}\)

\(\dfrac{-P}{3^{1111}}=\dfrac{-3^{1111}+6^{1111}-9^{1111}+12^{1111}-15^{1111}+18^{1111}-21^{1111}+24^{1111}}{-3^{1111}+6^{1111}-9^{1111}+12^{1111}-15^{1111}+18^{1111}-21^{1111}+24^{1111}}=1\)

\(-P=1.3^{1111}=3^{1111}\Leftrightarrow P=-3^{1111}\)

\(P=\dfrac{3^{1111}-6^{1111}+9^{1111}-12^{1111}+15^{1111}-18^{1111}+21^{1111}-24^{1111}}{-1+2^{1111}-3^{1111}+4^{1111}-5^{1111}+6^{1111}-7^{1111}+8^{1111}}\)

\(P=\dfrac{3^{1111}\left(1-2^{1111}+3^{1111}-4^{1111}+5^{1111}-6^{1111}+7^{1111}-8^{1111}\right)}{-1\left(1-2^{1111}+3^{1111}-4^{1111}+5^{1111}-6^{1111}+7^{1111}-8^{1111}\right)}\)

\(P=\dfrac{3^{1111}}{-1}=-3^{1111}\)

biết 1 cách :V thánh nào làm nốt cách kia đi ạ :V

Phân số ở đuôi không chính xác. Bạn viết lại đề chuẩn để mọi người hỗ trợ tốt hơn.

bang 3333o

k minh nhe

1111+2222+3333+1111+2222+3333+1111+2222+3333+1111+2222+3333+1111+2222+3333=(1111+2222+3333)x5

                                                                                                                                =33330  

ko có cách giải

vì 20000,,,,-9000 ko có nghĩa

de the ko biet lam

a) 50000 + 20000 + 10000 = 80000

80000 - (30000 + 20000) = 30000

b) 80000 - 30000 - 20000 = 30000

50000 + (20000 + 10000) = 80000

a) 30000 + (20000 + 40000) = 90000

    30000 + 20000 + 40000 = 90000

    60000 - (30000 + 20000) = 10000

    60000 - 30000 - 20000 = 10000

b) 40000 x 2 : 4 = 20000

    36000 : 6 x 3 = 18000

    20000 x 4 : 8 = 10000

    60000 : 3 x 2 = 18000