Question

Tim x biet

g) \(\frac{x}{15}=\frac{3}{5}+\frac{-2}{3}\)

h) \(\frac{x}{182}=\frac{-6}{14}.\frac{35}{91}\)

Answer 1

\(\frac{x}{15}=\frac{3}{5}+\frac{-2}{3}\)

\(\frac{x}{15}=\frac{-1}{15}\)

=> \(x=-1\)

\(\frac{x}{182}=\frac{-6}{14}\cdot\frac{35}{91}\)

\(\frac{x}{182}=\frac{-15}{91}\)

=> \(91x=182\cdot\left(-15\right)\)

=> \(91x=-2730\)

=> \(x=-30\)

Answer 2

g, \(\frac{x}{15}=\frac{3}{5}+\frac{-2}{3}\Leftrightarrow\frac{x}{15}=\frac{3}{5}-\frac{2}{3}\Leftrightarrow\frac{x}{15}=-\frac{1}{15}\)

\(\Leftrightarrow x=-1\)

h, \(\frac{x}{182}=\frac{-6}{14}.\frac{35}{91}\Leftrightarrow\frac{x}{182}=-\frac{15}{91}\Leftrightarrow\frac{x}{182}=\frac{-30}{182}\)

\(\Leftrightarrow x=-30\)

Answer 3

g, \(\frac{x}{15}=\frac{3}{5}+\frac{-2}{3}\)

\(\Leftrightarrow\frac{x}{15}=-\frac{1}{15}\)

\(\Leftrightarrow x=-1\)

Mấy câu kia dễ tự làm ((: