deetrick deetrick

10-09-2018
Mathematics

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How do you solve this?? Please help!

How do you solve this Please help class=

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JiakSai JiakSai

10-09-2018

f = (f1 f2) / (f1 + f2)

f(f1 + f2) = f1 f2

f f 1 + f f 2 = f1 f 2

f1 f2 - f f2 = f f1

f2 (f1 - f) = f f1

f2 = (f f1) / (f1 - f) <==== solution

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