Solve for x
x=20
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100+x\left(-5\right)=0
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
x\left(-5\right)=-100
Subtract 100 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-100}{-5}
Divide both sides by -5.
x=20
Divide -100 by -5 to get 20.
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