Question

\(x-\dfrac{5x+2}{6}=\dfrac{7-3x}{4}\)

Giải phương trình

Answer 1

=>12x-2(5x+2)=3(7-3x)

=>12x-10x-4=21-9x

=>2x-4-21+9x=0

=>11x=25

hay x=25/11

Answer 2

\(x-\dfrac{5x+2}{6}=\dfrac{7-3x}{4}\)

\(\Leftrightarrow\dfrac{12x-2\left(5x+2\right)}{12}=\dfrac{3\left(7-3x\right)}{12}\)

\(\Leftrightarrow\dfrac{12x-10x-4}{12}=\dfrac{21-9x}{12}\)

\(\Leftrightarrow\dfrac{2x-4}{12}=\dfrac{21-9x}{12}\)

\(\Leftrightarrow2x-4=21-9x\)

\(\Leftrightarrow11x=25\)

\(\Leftrightarrow x=\dfrac{25}{11}\)