Subtract 70/49 from 20/10
1st number: 2 0/10, 2nd number: 1 21/49
20/10 - 70/49 is 4/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 10 × 49 = 490,
20/10 = 20 × 49/10 × 49 = 980/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
70/49 = 70 × 10/49 × 10 = 700/490 - Subtract the two like fractions:
980/490 - 700/490 = 980 - 700/490 = 280/490 - After reducing the fraction, the answer is 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-70/49 20/10-70/98 60/10-70/49 20/30-70/49 20/50-70/49 20/70-70/49