Solve for x
x=40
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x\times \frac{1}{2}=20
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
x=20\times 2
Multiply both sides by 2, the reciprocal of \frac{1}{2}.
x=40
Multiply 20 and 2 to get 40.
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