Solve for d
d=123.75
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9d+11d=2475
Multiply both sides of the equation by 990, the least common multiple of 110,90.
20d=2475
Combine 9d and 11d to get 20d.
d=\frac{2475}{20}
Divide both sides by 20.
d=\frac{495}{4}
Reduce the fraction \frac{2475}{20} to lowest terms by extracting and canceling out 5.
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