Question

Tìm x biết: 0.2:1/1/5=2/3:(6x+7)

Answer 1

0,2:\(1\frac{1}{5}=\frac{2}{3}:\left(6x+7\right)\)

\(\Leftrightarrow0,2\times\left(6x+7\right)=1\frac{1}{5}\times\frac{2}{3}\)

\(\Leftrightarrow1,2x+1,4=\frac{4}{5}\)

\(\Leftrightarrow1,2x=\frac{4}{5}-1,4\)

\(\Leftrightarrow1,2x=-0,6\)

\(\Leftrightarrow x=-0,6:1,2\)

\(\Leftrightarrow x=-\frac{1}{2}\)

Vay x=\(-\frac{1}{2}\)