The gievn equation is: - P+Q = a (P-Q) How can get this form: Q = {(a-1) / (a+1)}P from the above equation?
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You'll need to get all terms with a "Q" in them on one side. P + Q = aP - aQ P + aQ + Q = aP aQ + Q = aP - P Factor! Q(a + 1) = P(a - 1) Divide by (a + 1)
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