Subtract 28/16 from 21/72
1st number: 21/72, 2nd number: 1 12/16
21/72 - 28/16 is -35/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
28/16 = 28 × 9/16 × 9 = 252/144 - Subtract the two like fractions:
42/144 - 252/144 = 42 - 252/144 = -210/144 - After reducing the fraction, the answer is -35/24
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