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OpenStudy (anonymous):
When you solve an equation, how do you know when to add and when to subtract? You may include an example if you need to.
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OpenStudy (amistre64):
you add when you see a + sign ... you subtract when you see a - sign ...
OpenStudy (anonymous):
|dw:1427917764615:dw|
OpenStudy (anonymous):
|dw:1427917846532:dw|
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