Subtract 7/42 from 49/20
1st number: 2 9/20, 2nd number: 7/42
49/20 - 7/42 is 137/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
49/20 = 49 × 21/20 × 21 = 1029/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
7/42 = 7 × 10/42 × 10 = 70/420 - Subtract the two like fractions:
1029/420 - 70/420 = 1029 - 70/420 = 959/420 - After reducing the fraction, the answer is 137/60
- In mixed form: 217/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20-7/42 49/20-14/42 49/40-7/42 49/20-7/84 49/20-21/42 49/60-7/42 49/20-35/42 49/20-49/42