Subtract 9/12 from 21/60
21/60 - 9/12 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Subtract the two like fractions:
21/60 - 45/60 = 21 - 45/60 = -24/60 - After reducing the fraction, the answer is -2/5
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