Question 320939
(-x/(1-x)+(1+x)/x)/((1-x)/x-x/(1+x)

LCM of numerator= x(1-x) LCM OF DENOMINATOR =x(1+x)
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-x^2+(1+x)(1-x)/ x(1-x)   / (1+x)(1-x)-x^2/x(1+x)
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-x^2+(1+x)(1-x)/x(1-x) / x(1+x)/(1+x)(1-x) -x^2 
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-x^2+1-x^2 / x(1-x)  / x(1+x)/ 1-x^2-x^2
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1-2x^2 /x(1-x) / x(1+x)/ 1-2x^2
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(1+x)/(1-x)