Subtract 90/7 from 36/5
1st number: 7 1/5, 2nd number: 12 6/7
36/5 - 90/7 is -198/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
36/5 = 36 × 7/5 × 7 = 252/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
90/7 = 90 × 5/7 × 5 = 450/35 - Subtract the two like fractions:
252/35 - 450/35 = 252 - 450/35 = -198/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5-90/7 36/10-90/7 36/5-90/14 36/15-90/7 36/5-90/21 36/25-90/7 36/5-90/35 36/35-90/7 36/5-90/49