Subtract 21/24 from 7/12
712 - 2124 is -724.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
712 = 7 × 212 × 2 = 1424 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
2124 = 21 × 124 × 1 = 2124 - Subtract the two like fractions:
1424 - 2124 = 14 - 2124 = -724
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