Question

Tim x biet

a) x-2 trên 5=3phan8

Answer 1

a, x-2/5=3/8 suy ra x-2.8=3.5 tương đương x-2.8=15 tương đương x-2=1,875 suy ra x=3,875

Answer 2

a)\(\frac{x-2}{5}=\frac{3}{8}\)

\(\Leftrightarrow\)\(x-2=\frac{3}{8}\cdot5\)

\(\Leftrightarrow\)\(x-2=\frac{15}{8}\)

\(\Leftrightarrow x=\frac{31}{8}\)

Vậy x=\(\frac{31}{8}\)