Subtract 70/49 from 21/8
1st number: 2 5/8, 2nd number: 1 21/49
21/8 - 70/49 is 67/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 49 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 8 × 49 = 392,
21/8 = 21 × 49/8 × 49 = 1029/392 - Likewise, for the 2nd fraction, since 49 × 8 = 392,
70/49 = 70 × 8/49 × 8 = 560/392 - Subtract the two like fractions:
1029/392 - 560/392 = 1029 - 560/392 = 469/392 - After reducing the fraction, the answer is 67/56
- In mixed form: 111/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-70/49 21/16-70/49 21/8-70/98 63/8-70/49 21/24-70/49 21/40-70/49 21/56-70/49