`2x-(2x^2)/(x+3)=(4x)/(x+3)+2/7`
$\Longleftrightarrow$`14x(x+3)-14x^2=28x+2(x+3)`
$\Longleftrightarrow$`42x=28x+2x+6`
$\Longleftrightarrow$`12x=6`
$\Longleftrightarrow$`x=1/2`
`(3x-2)/(x+7)=(6x+1)/(2x-3)`
$\Longleftrightarrow$`(3x-2)(2x-3)=(6x+1)(x+7)`
$\Longleftrightarrow$`6x^2-13x+6=6x^2+43x+7`
$\Longleftrightarrow$`-1=56x`
$\Longleftrightarrow$`x=-1/(56)`