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10+50x\times \frac{1}{25}+xx=x^{2}
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 50x, the least common multiple of 5x,25,50,50x.
10+50x\times \frac{1}{25}+x^{2}=x^{2}
Multiply x and x to get x^{2}.
10+2x+x^{2}=x^{2}
Multiply 50 and \frac{1}{25} to get 2.
10+2x+x^{2}-x^{2}=0
Subtract x^{2} from both sides.
10+2x=0
Combine x^{2} and -x^{2} to get 0.
2x=-10
Subtract 10 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-10}{2}
Divide both sides by 2.
x=-5
Divide -10 by 2 to get -5.