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OpenStudy (anonymous):
-7(p+8)=21
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OpenStudy (anonymous):
-7(p+8)=21 -7p - 56 = 21 -7p = 77 p = 77/(-7) p = -11
OpenStudy (anonymous):
Now you have to use FOIL. F:First O:Out I:IN L: Last|dw:1413328766054:dw||dw:1413328805206:dw||dw:1413328871161:dw| Therefore P equals -11
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