Subtract 72/60 from 30/42
1st number: 30/42, 2nd number: 1 12/60
30/42 - 72/60 is -17/35.
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,
30/42 = 30 × 10/42 × 10 = 300/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Subtract the two like fractions:
300/420 - 504/420 = 300 - 504/420 = -204/420 - After reducing the fraction, the answer is -17/35
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