Subtract 21/12 from 7/10
1st number: 7/10, 2nd number: 1 9/12
710 - 2112 is -2120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
710 = 7 × 610 × 6 = 4260 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
2112 = 21 × 512 × 5 = 10560 - Subtract the two like fractions:
4260 - 10560 = 42 - 10560 = -6360 - After reducing the fraction, the answer is -2120
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