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OpenStudy (anonymous):
9a - b - 2a - 10b (Simplify) A -7a + 11b B 11a + 9b C -11a - 9b D 7a - 11b I think it's A but I'm not sure
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OpenStudy (anonymous):
Actually it's D because 9a - 2a = 7a and -b - 10b = -11b so it would be 7a - 11b
OpenStudy (anonymous):
Thanks
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