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Solve the Following for X: 1 2 a + B + 2 X = 1 2 a + 1 B + 1 2 X - Mathematics

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Question

Solve the following for x:

`1/(2a+b+2x)=1/(2a)+1/b+1/(2x)`

Solution

The given equation is.`1/(2a+b+2x)=1/(2a)+1/b+1/(2x)`

`1/(2a+b+2x)=1/(2a)+1/b+1/(2x)`

`rArr1/(2a+b+2x)=1/(2x)=1/(2a)+1/b`

`rArr(2x-2a-b-2x)/(2x(2a+b+2x))=(b+2a)/(2ab)`

`rArr(-2a-b)/(2x(2a+b+2x))=(b+2a)/(2ab)`

`rArr(-(2a+b))/(2x(2a+b+2x))=(b+2a)/(2ab)`

`rArr(-1)/(2x(2a+b+2x))=(1)/(ab)`

`rArr 2x^2+2ax+bx+ab=0`

`rArr2x(x+a)+b(x+a)=0`

`rArr(x+a)(2x+b)=0`

`rArrx+a=0` or `2x+b=0`

`rArr x=-a` or `x=-b/2`

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2012-2013 (March) Delhi set 2

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