2z-28 = -26
3xz
(2x - 7)(x + 1)
(-3) x (-2z - 7) = 6z + 21 = 3 (2z + 7)
7 - 2x
4x - 7 = 2x + 5 2x - 7 = 5 2x = 12 x = 6.
2x+3-7=0 2x=4 x=2
6 - x + 7 - 3x - 5 = -2x - 10 ∴ x + 3x - 2x = 6 + 7 - 5 + 10 ∴ 2x = 18 ∴ x = 9
3x+7=2x-5 x=-12
(x - 2)(2x + 7)
2x
6