Subtract 1/20 from 49/42
1st number: 1 7/42, 2nd number: 1/20
49/42 - 1/20 is 67/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
49/42 = 49 × 10/42 × 10 = 490/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
1/20 = 1 × 21/20 × 21 = 21/420 - Subtract the two like fractions:
490/420 - 21/420 = 490 - 21/420 = 469/420 - After reducing the fraction, the answer is 67/60
- In mixed form: 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42-1/20 49/42-2/20 49/84-1/20 49/42-1/40 49/42-3/20 49/42-1/60 49/42-5/20 49/42-7/20