Subtract 15/8 from 9/15, Solve 9/15

Subtract 15/8 from 9/15

1^st number: 9/15, 2^nd number: 1 7/8

9/15 - 15/8 is -51/40.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120
Likewise, for the 2nd fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120
Subtract the two like fractions:
72/120 - 225/120 = 72 - 225/120 = -153/120
After reducing the fraction, the answer is -51/40

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