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OpenStudy (anonymous):
explanation please! (See attachment)
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OpenStudy (anonymous):
OpenStudy (anonymous):
There is a neat little trick you can do here. remember that you can only add/subtract fractions if the denominator is the same. you have (x - 8) under one and (8 - x) under the other. you can factor out a -1 from the second one to give you (x-8) IE |dw:1375290303122:dw| |dw:1375290323964:dw|
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