Subtract 27/60 from 21/40
21/40 - 27/60 is 3/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
27/60 = 27 × 2/60 × 2 = 54/120 - Subtract the two like fractions:
63/120 - 54/120 = 63 - 54/120 = 9/120 - After reducing the fraction, the answer is 3/40
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