Solve for u
u=5.09
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20.36=4u
Variable u cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by u.
4u=20.36
Swap sides so that all variable terms are on the left hand side.
u=\frac{20.36}{4}
Divide both sides by 4.
u=\frac{2036}{400}
Expand \frac{20.36}{4} by multiplying both numerator and the denominator by 100.
u=\frac{509}{100}
Reduce the fraction \frac{2036}{400} to lowest terms by extracting and canceling out 4.
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