Subtract 15/12 from 20/21
1st number: 20/21, 2nd number: 1 3/12
2021 - 1512 is -2584.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
2021 = 20 × 421 × 4 = 8084 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
1512 = 15 × 712 × 7 = 10584 - Subtract the two like fractions:
8084 - 10584 = 80 - 10584 = -2584
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