Subtract 81/42 from 4/60
1st number: 4/60, 2nd number: 1 39/42
4/60 - 81/42 is -391/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
4/60 = 4 × 7/60 × 7 = 28/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
81/42 = 81 × 10/42 × 10 = 810/420 - Subtract the two like fractions:
28/420 - 810/420 = 28 - 810/420 = -782/420 - After reducing the fraction, the answer is -391/210
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