Subtract 70/63 from 24/21
1st number: 1 3/21, 2nd number: 1 7/63
24/21 - 70/63 is 2/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
24/21 = 24 × 3/21 × 3 = 72/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
70/63 = 70 × 1/63 × 1 = 70/63 - Subtract the two like fractions:
72/63 - 70/63 = 72 - 70/63 = 2/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21-70/63 24/42-70/63 72/21-70/63 24/63-70/63