Subtract 72/60 from 15/42
1st number: 15/42, 2nd number: 1 12/60
15/42 - 72/60 is -59/70.
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,
15/42 = 15 × 10/42 × 10 = 150/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Subtract the two like fractions:
150/420 - 504/420 = 150 - 504/420 = -354/420 - After reducing the fraction, the answer is -59/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42-72/60 15/84-72/60 45/42-72/60 75/42-72/60