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Anonymous
8+7x = 20+3x
7x-3x = 20-8
4x = 12
x = 3
Wiki User
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-46 = 3x + 7x
x=6 hope this helps
3+3x+7x=13 3x+7x=10 10x=10 x=1
x=6
7x = 3x - 12 4x=-12 x=-3