2 · (х - 2) = 30 - х + 2
2х - 4 = 30 - х + 2
2х + х = 30 + 2 + 4
3х = 36
х = 36 : 3
х = 12
Ответ: 12.
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2 · (х - 2) = 30 - х + 2
2х - 4 = 30 - х + 2
2х + х = 30 + 2 + 4
3х = 36
х = 36 : 3
х = 12
Ответ: 12.