(3x+5) + (8x + 1) = 17
3x + 5 + 8x + 1 = 17
11x + 6 = 17
11x = 17 - 6
11x = 11
x = 11 / 11
x = 1
(3 - 5,8x) - (2,2x + 3) = 16
3 - 5.8x - 2.2x - 3 = 16
-8x = 16
x = 16 / (-8)
x = -2
Ответ: