Question

Tìm ý 

ý nhân 3 phần 5 - y chia 5 = 4

 

Answer 1

y x 3/5 - y :5 =4

y x 3/5 - y x 1/5 = 4

y x (3/5 - 1/5) = 4

y x 2/5  =4/1

y   =4/1:2/5

y   =10

Answer 2

y x\(\frac{3}{5}\)-y :5=4

y x\(\frac{3}{5}\)-y x\(\frac{1}{5}\)=4

y x(\(\frac{3}{5}\)-\(\frac{1}{5}\))=4

y x \(\frac{2}{5}\)=4                       y =4 :\(\frac{2}{5}\)=4 x \(\frac{5}{2}\)=10

mình nhanh nhất! chọn mình nhé!    ^o^