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a) 3x = 2x + 8
3x - 2x = 8
x = 8
b) 7x + 9 = 6x + 12
7x - 6x = 12 - 9
x = 3
c) 8x - x = 6x + 3
7x - 6x = 3
x = 3
d) -2x + 7 = -x + 2
7 - 2 = 2x - x
x = 5
e) 7x + 8x - 1 = 14x + 15
15x - 14x = 15 - 1
x = 14
f) 2(3x - 5) = 3x + 2x + 1
6x - 10 = 5x + 1
6x - 5x = 10 + 1
x = 11
g) 7 + 3(2 + x) = 14 + 2x
7 + 6 + 3x = 14 + 2x
3x - 2x = 14 - 13
x = 1
Hope it helps
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