Problema Solution
If y=(x-1)/(x+1) find the value of x.
Answer provided by our tutors
y = (x-1)/(x+1)
we get
y(x+1) = x - 1
xy + y = x - 1
1+y = x - xy
1+y = x(1-y)
x = (1+y) / (1-y)
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