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OpenStudy (anonymous):
(2a-1)-(-5a-5)
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OpenStudy (theviper):
2a-1+5a+5 =>7a+4
OpenStudy (anonymous):
If we put on the parentheses a 1 we get- 1(2a-1)-1(-5a-5)= 2a-1+5a+5 [Two negatives multiplied by each other is a positive] Once we add/subtract these together we get- 7a+4
OpenStudy (anonymous):
|dw:1341873376628:dw| Sorry, meant this
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