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OpenStudy (anonymous):
Solve: 2(x - 3) + 2(x - 7) = 40
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sam (.sam.):
Divide 2 x - 3 + x - 7 = 20 2x-10=20
sam (.sam.):
Then sovle
OpenStudy (anonymous):
???
sam (.sam.):
2x-10=20 2x=30 x=15
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