Solve for u
u=1.25
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u=\frac{8.75}{7}
Divide both sides by 7.
u=\frac{875}{700}
Expand \frac{8.75}{7} by multiplying both numerator and the denominator by 100.
u=\frac{5}{4}
Reduce the fraction \frac{875}{700} to lowest terms by extracting and canceling out 175.
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