Question

решите уравнение:
1) $frac{2 x^{2} +7}{ x^{3}+1 } - frac{2}{ x^{2} -x+1} = frac{3}{x+1}$
2) $frac{2y-1}{ 14y^{2}+7y } - frac{2y+1}{6y^{2} -3y} = frac{8}{3-12 y^{2} }$
3) $frac{1}{ x+1 } - frac{1}{x^{2} -3x+2} = frac{6}{2-x- 2x^{2}+ x^{3} } }$