Solve for x
x=20
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5\times 4=x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 5x, the least common multiple of x,5.
20=x
Multiply 5 and 4 to get 20.
x=20
Swap sides so that all variable terms are on the left hand side.
Examples
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