Subtract 7/16 from 90/7
1st number: 12 6/7, 2nd number: 7/16
90/7 - 7/16 is 1391/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 7 × 16 = 112,
90/7 = 90 × 16/7 × 16 = 1440/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
7/16 = 7 × 7/16 × 7 = 49/112 - Subtract the two like fractions:
1440/112 - 49/112 = 1440 - 49/112 = 1391/112 - In mixed form: 1247/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-14/16 90/14-7/16 90/7-7/32 90/7-21/16 90/21-7/16 90/7-7/48 90/7-35/16 90/35-7/16 90/7-7/80 90/7-49/16 90/49-7/16