Subtract 27/16 from 9/15, Solve 9/15

Subtract 27/16 from 9/15

1^st number: 9/15, 2^nd number: 1 11/16

9/15 - 27/16 is -87/80.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 15 × 16 = 240,
9/15 = 9 × 16/15 × 16 = 144/240
Likewise, for the 2nd fraction, since 16 × 15 = 240,
27/16 = 27 × 15/16 × 15 = 405/240
Subtract the two like fractions:
144/240 - 405/240 = 144 - 405/240 = -261/240
After reducing the fraction, the answer is -87/80

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