Solve for x
x=12.5
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5=0.4x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
0.4x=5
Swap sides so that all variable terms are on the left hand side.
x=\frac{5}{0.4}
Divide both sides by 0.4.
x=\frac{50}{4}
Expand \frac{5}{0.4} by multiplying both numerator and the denominator by 10.
x=\frac{25}{2}
Reduce the fraction \frac{50}{4} to lowest terms by extracting and canceling out 2.
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