Question

(x+7)(8x+1)=(6x-7)(4x-1)+93x

Answer 1

$(x+7)(8x+1)=(6x-7)(4x-1)+93x\Leftrightarrow 8x^2+57x+7=24x^2-34x+7+93x$

$-16x^2-2x=0\Leftrightarrow 16x^2+2x=0\Leftrightarrow 8x^2+x=0\Leftrightarrow x(8x+1)=0\Rightarrow x=\left \{ -\frac{1}{8},0 \right \}$