4х - 3 = 2х + 2
4х - 3 - 2 = 2х
-3 - 2 = 2х - 4х
-5 = -2х
-2,5 = -х
х = 2,5
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3(х - 5) + 7 = 16
3х - 15 + 7 = 16
3х - 15 = 16 - 7
3х - 15 = 9
3х = 15 + 9
3х = 24
х = 24 : 3
х = 8
Удачи)