Question

  giai phuong trinh sau:  \(\frac{x+2}{5}-\frac{x}{3}=\frac{2x-5}{2}\)

 

Answer 1

<=> \(\frac{3\left(x+2\right)-5x}{5.3}=\frac{2x-5}{2}< =>\frac{3x+6-5x}{15}=\frac{2x-5}{2}\) <=> 2(6-2x)=15(2x-5)

<=> 12-4x=30x-75 => 34x=87 => x=\(\frac{87}{34}\)

Answer 2

\(\frac{x+2}{5}-\frac{x}{3}-\frac{2x-5}{2}=0\)0

\(\Leftrightarrow\frac{6\left(x+2\right)-10x-15\left(2x-5\right)}{30}\)=0

\(\Leftrightarrow6x+12-10x-30x+75\)=0

\(\Leftrightarrow-34x=-87\)

\(\Leftrightarrow x=\frac{87}{34}\)

Vay S={\(\frac{87}{34}\)}