Subtract 21/12 from 28/32
1st number: 28/32, 2nd number: 1 9/12
28/32 - 21/12 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 12 is 96
Next, find the equivalent fraction of both fractional numbers with denominator 96 - For the 1st fraction, since 32 × 3 = 96,
28/32 = 28 × 3/32 × 3 = 84/96 - Likewise, for the 2nd fraction, since 12 × 8 = 96,
21/12 = 21 × 8/12 × 8 = 168/96 - Subtract the two like fractions:
84/96 - 168/96 = 84 - 168/96 = -84/96 - After reducing the fraction, the answer is -7/8
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