Subtract 56/12 from 72/30
1st number: 2 12/30, 2nd number: 4 8/12
72/30 - 56/12 is -34/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
72/30 = 72 × 2/30 × 2 = 144/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
56/12 = 56 × 5/12 × 5 = 280/60 - Subtract the two like fractions:
144/60 - 280/60 = 144 - 280/60 = -136/60 - After reducing the fraction, the answer is -34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60-56/12 72/30-56/24 72/90-56/12 72/30-56/36 72/30-56/60 72/30-56/84