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5x - 8 = x + 8
5x - x = 8 + 8
4x = 16
x = 16/4
x = 4
2) 2x - 3(2 + x) = 4x - 1
2x - 6 - 3x = 4x -1
2x - 4x - 3x = 6 -1
-5x = 5
x = 5/-5
x = -1
3) 5x - (2x + 6) = 21
5x - 2x - 6 = 21
3x = 21 + 6
3x = 27
x = 27/3
x = 9
=4x
2) 2x-6+3x=4x-1
=5x-6=4x-1
= x=-5