15x
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10x+7 = 5x+32 10x-5x = 32-7 5x = 25 x = 5
If: 10x+7 = 5x+22 Then: 10x-5x = 22-7 And: 5x = 15 So: x = 3
5x + 4 = 10x - 5 10x - 5x = 4 + 5 5x = 9 x = 1.8
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3
5x + 8xy + 10x + 3xy = 15x + 11xycombine like terms (the x's and the xy's)