Subtract 70/49 from 10/20
1st number: 10/20, 2nd number: 1 21/49
10/20 - 70/49 is -13/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
10/20 = 10 × 49/20 × 49 = 490/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
70/49 = 70 × 20/49 × 20 = 1400/980 - Subtract the two like fractions:
490/980 - 1400/980 = 490 - 1400/980 = -910/980 - After reducing the fraction, the answer is -13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40-70/49 10/20-70/98 30/20-70/49 10/60-70/49 50/20-70/49 70/20-70/49