Subtract 45/21 from 70/3
1st number: 23 1/3, 2nd number: 2 3/21
70/3 - 45/21 is 445/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 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 21 × 1 = 21,
45/21 = 45 × 1/21 × 1 = 45/21 - Subtract the two like fractions:
490/21 - 45/21 = 490 - 45/21 = 445/21 - In mixed form: 214/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/3-90/21 70/6-45/21 70/3-45/42 70/9-45/21 70/3-45/63 70/15-45/21 70/21-45/21