Subtract 12/28 from 72/70
1st number: 1 2/70, 2nd number: 12/28
72/70 - 12/28 is 3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Subtract the two like fractions:
144/140 - 60/140 = 144 - 60/140 = 84/140 - After reducing the fraction, the answer is 3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70-24/28 72/70-12/56 72/70-36/28 72/70-12/84 72/70-60/28 72/70-84/28