Show that multiplying through by the common denominator gives 4(2x−1)−(x+1)=(x+1)(2x−1)4(2x-1) - (x+1) = (x+1)(2x-1)4(2x−1)−(x+1)=(x+1)(2x−1)
Hence solve 4x+1−12x−1=1\displaystyle \frac{4}{x + 1} - \frac{1}{2x - 1} = 1x+14−2x−11=1
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