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\left(x+5\right)\times 4-8=x
Variable x cannot be equal to -5 since division by zero is not defined. Multiply both sides of the equation by x+5.
4x+20-8=x
Use the distributive property to multiply x+5 by 4.
4x+12=x
Subtract 8 from 20 to get 12.
4x+12-x=0
Subtract x from both sides.
3x+12=0
Combine 4x and -x to get 3x.
3x=-12
Subtract 12 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-12}{3}
Divide both sides by 3.
x=-4
Divide -12 by 3 to get -4.