Question

5/7 - 2/3 *X= 4/5

              Tìm X

Answer 1

=>2/3x=5/7-4/5=-3/35

=>x=-9/70

Answer 2

\(\dfrac{5}{7}-\dfrac{2}{3}.x=\dfrac{4}{5}\)

\(-\dfrac{2}{3}.x=\dfrac{4}{5}-\dfrac{5}{7}\)

\(-\dfrac{2}{3}.x=\dfrac{3}{35}\)

\(x=\dfrac{3}{35}:\left(-\dfrac{2}{3}\right)\)

\(x=\dfrac{3}{35}.\left(-\dfrac{3}{2}\right)\)

\(x=-\dfrac{9}{79}\)

Answer 3

\(\dfrac{5}{7}-\dfrac{2}{3}\cdot x=\dfrac{4}{5}\)

\(\dfrac{2}{3}\cdot x=\dfrac{5}{7}-\dfrac{4}{5}\)

\(\dfrac{2}{3}\cdot x=-\dfrac{3}{35}\)

\(x=-\dfrac{3}{35}:\dfrac{2}{3}\)

\(x=-\dfrac{9}{70}\)

Answer 4

\(\dfrac{5}{7}-\dfrac{2}{3}.x=\dfrac{4}{5}\)

\(\dfrac{2}{3}.x=\dfrac{5}{7}-\dfrac{4}{5}\)

\(\dfrac{2}{3}.x=\dfrac{-3}{35}\)

\(x=\dfrac{-3}{35}:\dfrac{2}{3}\)

\(x=\dfrac{-9}{70}\)

\(#YH\)