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\left(x+1\right)\times 7=\left(x-1\right)\times 5
Variable x cannot be equal to any of the values -1,1 since division by zero is not defined. Multiply both sides of the equation by \left(x-1\right)\left(x+1\right), the least common multiple of x-1,x+1.
7x+7=\left(x-1\right)\times 5
Use the distributive property to multiply x+1 by 7.
7x+7=5x-5
Use the distributive property to multiply x-1 by 5.
7x+7-5x=-5
Subtract 5x from both sides.
2x+7=-5
Combine 7x and -5x to get 2x.
2x=-5-7
Subtract 7 from both sides.
2x=-12
Subtract 7 from -5 to get -12.
x=\frac{-12}{2}
Divide both sides by 2.
x=-6
Divide -12 by 2 to get -6.