Subtract 72/7 from 49/5
1st number: 9 4/5, 2nd number: 10 2/7
49/5 - 72/7 is -17/35.
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,
49/5 = 49 × 7/5 × 7 = 343/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
72/7 = 72 × 5/7 × 5 = 360/35 - Subtract the two like fractions:
343/35 - 360/35 = 343 - 360/35 = -17/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/5-72/7 49/10-72/7 49/5-72/14 49/15-72/7 49/5-72/21 49/25-72/7 49/5-72/35 49/35-72/7 49/5-72/49