Question

помогите пожалуйста ​

Answer 1

$\displaystyle\bf\\(-7x-3)(4x+1)=-2x+(5-7x)(4x+4)-149\\\\-28x^{2}-7x-12x-3=-2x+20x+20-28x^{2} -28x-149\\\\-28x^{2}-19x-3=-28x^{2}-10x-129\\\\-28x^{2}-19x-3+28x^{2}+10x+129=0\\\\-9x+126=0\\\\-9x=-126\\\\x=14$