Solve for u
u = \frac{11}{8} = 1\frac{3}{8} = 1.375
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u=\frac{1}{2}+\frac{7}{8}
Add \frac{7}{8} to both sides.
u=\frac{4}{8}+\frac{7}{8}
Least common multiple of 2 and 8 is 8. Convert \frac{1}{2} and \frac{7}{8} to fractions with denominator 8.
u=\frac{4+7}{8}
Since \frac{4}{8} and \frac{7}{8} have the same denominator, add them by adding their numerators.
u=\frac{11}{8}
Add 4 and 7 to get 11.
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