Question

[Huỳnh Tấn Hưng]

(x-2phan5) nhan 1phan2 =1

Answer 1

[★luffyッcute★(Team ASL)]

\(\left(x-\frac{2}{5}\right)×\frac{1}{2}=1=>\left(x-\frac{2}{5}\right)=1:\frac{1}{2}=>\left(x-\frac{2}{5}\right)=2=>x=2+\frac{2}{5}=>x=\frac{12}{5}\)

vậy \(x=\frac{12}{5}\)

Answer 2

[Bellion]

             Bài làm :

Ta có :

\(\left(x-\frac{2}{5}\right)\times\frac{1}{2}=1\)

\(x-\frac{2}{5}=1\div\frac{1}{2}\)

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

\(x=2+\frac{2}{5}=2,4\)

Vậy x=2,4