Question

X x3/5-1/2=4/5

dấu gạch chéo là phân số

Answer 1

\(x\times\frac{3}{5}-\frac{1}{2}=\frac{4}{5}\)

\(\Rightarrow x\times\frac{6}{10}-\frac{5}{10}=\frac{4}{5}\)

\(\Rightarrow x\times\frac{1}{10}=\frac{4}{5}\)

\(\Rightarrow x=\frac{4}{5}:\frac{1}{10}\)

\(\Rightarrow x=\frac{4}{5}\cdot\frac{10}{1}\)

\(\Rightarrow x=\frac{40}{5}=8\)

Vậy x = 8

Answer 2

\(x\times\frac{3}{5}-\frac{1}{2}=\frac{4}{5}\)

\(x\times\frac{3}{5}=\frac{4}{5}+\frac{1}{2}\)

\(x\times\frac{3}{5}=\frac{13}{10}\)

\(x=\frac{13}{10}:\frac{3}{5}\)

\(x=\frac{13}{6}\)

Answer 3

Lộn :D

\(x\cdot\frac{3}{5}-\frac{1}{2}=\frac{4}{5}\)

\(\Rightarrow x\cdot\frac{3}{5}=\frac{4}{5}+\frac{1}{2}\)

\(\Rightarrow x\cdot\frac{3}{5}=\frac{8}{10}+\frac{5}{10}\)

\(\Rightarrow x\cdot\frac{3}{5}=\frac{13}{10}\)

\(\Rightarrow x=\frac{13}{10}:\frac{3}{5}=\frac{65}{30}=\frac{13}{6}\)