Question

tìm x biết : 2-x*2/5=8/5

Answer 1

\(2-x\times\frac{2}{5}=\frac{8}{5}\)

\(x\times\frac{2}{5}=2-\frac{8}{5}\)

\(x\times\frac{2}{5}=\frac{2}{5}\)

\(x=\frac{2}{5}:\frac{2}{5}\)

\(x=1\)

Answer 2

2-x*2/5=8/5

x*2/5=2-8/5=2/5

x=2/5:2/5=1

Answer 3

\(2-Xx\frac{2}{5}=\frac{8}{5}\\ Xx\frac{2}{5}=2-\frac{8}{5}\\ Xx\frac{2}{5}=\frac{2}{5}\\ X=\frac{2}{5}:\frac{2}{5}\\ X=1\)

Answer 4

\(2-x.\frac{2}{5}=\frac{8}{5}\)

\(x.\frac{2}{5}=2-\frac{8}{5}\)

\(x.\frac{2}{5}=\frac{2}{5}\)

\(x=\frac{2}{5}:\frac{2}{5}\)

\(x=1\)

Chúc bạn học tốt !