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-7x + 3 = 23 + 3x
3-23 = 3x+7x
-20 = 10x
-20/10 = x
-2 = x
-7x+11+4x -8 = -18
-3x+3 = -18
3+18 = 3x
21 = 3x
21/3 = x
7 = x