Question

12/8 - x + 3= 15/4 Tìm x

Answer 1

\(=>x=\dfrac{12}{8}-\left(\dfrac{15}{4}-3\right)=\dfrac{6}{4}-\dfrac{3}{4}=\dfrac{3}{4}\)

Answer 2

\(\dfrac{12}{8}-x+3=\dfrac{15}{4}\)

\(\dfrac{12}{8}-x=\dfrac{15}{4}-3\)

\(\dfrac{12}{8}-x=\dfrac{3}{4}\)

\(\dfrac{6}{4}-x=\dfrac{3}{4}\)

        \(x=\dfrac{6}{4}-\dfrac{3}{4}\)

        \(x=\dfrac{3}{4}\)