Question 903872
x=a/b


bx = a


a = bx


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(a+b)/(a-b)


(bx+b)/(bx-b)


(b*(x+1))/(b*(x-1))


(x+1)/(x-1)


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So {{{(a+b)/(a-b) = (x+1)/(x-1)}}} when {{{x=a/b}}}, {{{a<>b}}}, {{{b<>0}}}