Subtract 21/70 from 48/21
1st number: 2 6/21, 2nd number: 21/70
48/21 - 21/70 is 139/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
48/21 = 48 × 10/21 × 10 = 480/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Subtract the two like fractions:
480/210 - 63/210 = 480 - 63/210 = 417/210 - After reducing the fraction, the answer is 139/70
- In mixed form: 169/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-21/70 48/21-42/70 48/42-21/70 48/21-63/70 48/63-21/70