Subtract 15/60 from 1/42
1/42 - 15/60 is -19/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
1/42 = 1 × 10/42 × 10 = 10/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
15/60 = 15 × 7/60 × 7 = 105/420 - Subtract the two like fractions:
10/420 - 105/420 = 10 - 105/420 = -95/420 - After reducing the fraction, the answer is -19/84
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