7(2x - 3) + 5(3x - 2) = 14x - 21 + 15x - 10 = 29x - 31 = 29x - 31
-2(4x + 8) – 3(5x - 1) = -8x - 16 - 15x + 3 = -23x - 13 = -23x - 13
Ответ: 1) 29x - 31; 2) -23x - 13