Solve for x
x=25
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4x=5\times 20
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 5,x.
4x=100
Multiply 5 and 20 to get 100.
x=\frac{100}{4}
Divide both sides by 4.
x=25
Divide 100 by 4 to get 25.
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