Solve for x
x=\frac{1}{2}=0.5
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42=84x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
84x=42
Swap sides so that all variable terms are on the left hand side.
x=\frac{42}{84}
Divide both sides by 84.
x=\frac{1}{2}
Reduce the fraction \frac{42}{84} to lowest terms by extracting and canceling out 42.
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