1) 2(х + 1) - 3 = 11 2) 3(1 + 2х) = 75
2(х + 1) = 11 + 3 1 + 2х = 75 : 3
2(х + 1) = 14 1 + 2х = 25
х + 1 = 14 : 2 2х = 25 - 1
х + 1 = 7 2х = 24
х = 7 - 1 х = 24 : 2
х = 6 х = 12
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3) 3(х - 1) + 2 = 17
3х - 3 + 2 = 17
3х - 1 = 17
3х = 17 + 1
3х = 18
х = 18 : 3
х = 6
