Subtract 21/12 from 2/10
1st number: 2/10, 2nd number: 1 9/12
2/10 - 21/12 is -31/20.
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,
2/10 = 2 × 6/10 × 6 = 12/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Subtract the two like fractions:
12/60 - 105/60 = 12 - 105/60 = -93/60 - After reducing the fraction, the answer is -31/20
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