Subtract 30/42 from 15/60
15/60 - 30/42 is -13/28.
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,
15/60 = 15 × 7/60 × 7 = 105/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
30/42 = 30 × 10/42 × 10 = 300/420 - Subtract the two like fractions:
105/420 - 300/420 = 105 - 300/420 = -195/420 - After reducing the fraction, the answer is -13/28
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