Subtract 9/56 from 90/7
1st number: 12 6/7, 2nd number: 9/56
90/7 - 9/56 is 711/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
90/7 = 90 × 8/7 × 8 = 720/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
9/56 = 9 × 1/56 × 1 = 9/56 - Subtract the two like fractions:
720/56 - 9/56 = 720 - 9/56 = 711/56 - In mixed form: 1239/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-18/56 90/14-9/56 90/7-27/56 90/21-9/56 90/7-45/56 90/35-9/56 90/7-63/56 90/49-9/56