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OpenStudy (anonymous):
X+7=12+3x-7x solve
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OpenStudy (charlotte123):
this is what I got: http://www.wolframalpha.com/input/?i=X%2B7%3D12%2B3x-7x
OpenStudy (rina.r):
x+7-12=+3x-7x x-5=-4x x=-4+5 x=1
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