Question

1) 14(x-9) - 4x + 26(1-x)=0
2) (x+8)(x-7) - (x-4)(x+3) + 5(2x-10)=0

Answer 1

1)
14x - 14(9) - 4x + 26 - 26x = 0
-16x - 126 + 26 = 0
-100 = 16x
x = -100/16
x = -25/4

2)
(x+8)(x-7) - (x-4)(x+3) + 5(2x-10) = 0
x²+x-56 - x²⁺x⁺12 + 10x -50 = 0
12x - 94 = 0
12x = 94
x = 47/6