Subtract 75/20 from 90/49
1st number: 1 41/49, 2nd number: 3 15/20
90/49 - 75/20 is -375/196.
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,
75/20 = 75 × 49/20 × 49 = 3675/980 - Subtract the two like fractions:
1800/980 - 3675/980 = 1800 - 3675/980 = -1875/980 - After reducing the fraction, the answer is -375/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98-75/20 90/49-75/40 90/49-75/60