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6 + 6 = 4x - x
12 = 3x
x = 4
2. 2x + 7 = 5x - 11
7 + 11 = 5x - 2x
18 = 3x
x= 6
x + 6 = 4x - 6
6 + 6 = 4x - x
12 = 3x
4 = x
2.
2x + 7 = 5x - 11
11 + 7 = 5x - 2x
18 = 3x
6 = x