Subtract 15/9 from 21/16
1st number: 1 5/16, 2nd number: 1 6/9
21/16 - 15/9 is -17/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
15/9 = 15 × 16/9 × 16 = 240/144 - Subtract the two like fractions:
189/144 - 240/144 = 189 - 240/144 = -51/144 - After reducing the fraction, the answer is -17/48
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