Subtract 7/20 from 90/49
1st number: 1 41/49, 2nd number: 7/20
90/49 - 7/20 is 1457/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
90/49 = 90 × 20/49 × 20 = 1800/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Subtract the two like fractions:
1800/980 - 343/980 = 1800 - 343/980 = 1457/980 - In mixed form: 1477/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-14/20 90/98-7/20 90/49-7/40 90/49-21/20 90/49-7/60 90/49-35/20 90/49-49/20