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OpenStudy (anonymous):
3x + 7 = 22 what's x? 3x + 7 = 22 what's x? @Mathematics
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OpenStudy (anonymous):
subtract 7 to both sides: 3x+7=22 -7 -7 ------------- 3x=15 divded by three on each side 3x=15 x=5 -- --- 3 3
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