Subtract 72/7 from 70/3
1st number: 23 1/3, 2nd number: 10 2/7
70/3 - 72/7 is 274/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
70/3 = 70 × 7/3 × 7 = 490/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
72/7 = 72 × 3/7 × 3 = 216/21 - Subtract the two like fractions:
490/21 - 216/21 = 490 - 216/21 = 274/21 - In mixed form: 131/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/6-72/7 70/3-72/14 70/9-72/7 70/3-72/21 70/15-72/7 70/3-72/35 70/21-72/7 70/3-72/49