(B %2B X)/(A - B)=(-B %2B X)/(A %2B B) – InterviewSolution

1.

(B %2B X)/(A - B)=(-B %2B X)/(A %2B B)

Answer»

(x + B)/(A-B) = (x - B)/(A + B)

(x + B)(A+B) = (x - B)(A - B)

xA + xB + AB + B^2 = xA - xB - AB + B^2

xB + xB = - AB - AB

2xB = - 2AB

x = - AB/B = - A

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