\(\frac{3}{2}\)x \(\frac{3}{4}\)x \(\frac{4}{5}\): \(\frac{1}{5}\)= \(\frac{9}{8}\)x \(\frac{4}{5}\): \(\frac{1}{5}\)= \(\frac{9}{10}\): \(\frac{1}{5}\)= \(\frac{9}{10}\)x \(\frac{5}{1}\)= \(\frac{9}{2}\)

bằng 36 phần 8 thì phải

hỏi google phay

Hỏi gg đi khó lắm

chịu mình không thể giải được

Mấy con gà lắt nhắt này, dễ thế mà cũng ko tính đc.

\(\frac{19}{20}-x+\frac{3}{4}=\frac{8}{5}\)

\(\frac{19}{20}-x=\frac{8}{5}-\frac{3}{4}\)

\(\frac{19}{20}-x=\frac{17}{20}\)

\(x=\frac{19}{20}-\frac{17}{20}\)

 \(x=\frac{1}{10}\)

\(\frac{19}{20}-x+\frac{3}{4}=\frac{8}{5}\)

\(1,7-x=1,6\)

\(x=1,7-1,6\)

\(x=0,1\)

\(\frac{3}{4}+\frac{5}{9}:\frac{4}{5}=\frac{3}{4}+\frac{5}{9}\times\frac{5}{4}\)

\(=\frac{3}{4}+\frac{25}{36}=\frac{27}{36}+\frac{25}{36}=\frac{27+25}{36}=\frac{52}{36}=\frac{13}{9}\)

\(\frac{7}{19}\times\frac{4}{7}-\frac{7}{19}\times\frac{3}{7}=\frac{7}{19}\times\left(\frac{4}{7}-\frac{3}{7}\right)\)

\(=\frac{7}{19}\times\frac{1}{7}=\frac{1}{19}\)

a. \(\frac{3}{4}+\frac{5}{9}\div\frac{4}{5}=\frac{3}{4}+\frac{25}{36}=\frac{13}{9}.\)

b. \(\frac{7}{19}\times\frac{4}{7}-\frac{7}{19}\times\frac{3}{7}=\frac{7}{19}\times\left(\frac{4}{7}-\frac{3}{7}\right)=\frac{7}{19}\times\frac{1}{7}=\frac{1}{19}\)

a: =1/2+3/2=2

b: =2/5+7/5=9/5

c: =2/3+2/3=4/3

ai trả lời cho mình vs sos

\(\frac{1}{4}\)+ x : 4 =\(\frac{3}{4}\)

\(\frac{1}{4}\)+ x = \(\frac{3}{4}\)* 4

\(\frac{1}{4}\)+ x = \(\frac{12}{4}\)

\(\frac{1}{4}\)+ x = 3

             x = 3 - \(\frac{1}{4}\)

             x = \(\frac{11}{4}\)

a) (12/25 + 13/25) + 3/5

= 25/25 + 3/5 

= 25/25 + 15/25

= 40/25 = 8/5

b) 3/2 + ( 2/3 + 4/3)

=  3/2 + 1/3

=  15/6

c) ( 3/5 + 7/5) + 3/4

=  10/5 + 3/4

= 55/20 = 11/4

hok tot

nho k nhe

giải : ( ko chép lại đề ....... tự chép )

a) \(\frac{3}{5}\)+(  \(\frac{12}{25}\) + \(\frac{13}{25}\))

= \(\frac{3}{5}\)+           1

= \(\frac{8}{5}\)

b) \(\frac{3}{2}\)+   ( \(\frac{2}{3}\)+\(\frac{4}{3}\))

=   \(\frac{3}{2}\)+       2

=   \(\frac{7}{2}\)

c) (\(\frac{3}{5}\)+ \(\frac{7}{5}\))+ \(\frac{3}{4}\)

=      2                   + \(\frac{3}{4}\)

= \(\frac{11}{4}\)

hok tốt nha !!!