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2x + 1 = 3
2x = 2
x = 1
L. 2a - 1 = 3a - 5
2a - 3a = 1 - 5
- a = - 4
a = 4
M. 2(3x - 1) = 2(2x + 3)
6x - 2 = 4x + 6
6x - 4x = 2 + 6
2x = 8
x = 8/2
x = 4
N. 15/3 xp = 5
5 xp = 5
xp = 1
O. 3q - 1 = q + 3
3q - q = 1 + 3
2q = 4
q = 2