Subtract 28/16 from 5/7
1st number: 5/7, 2nd number: 1 12/16
5/7 - 28/16 is -29/28.
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,
5/7 = 5 × 16/7 × 16 = 80/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
28/16 = 28 × 7/16 × 7 = 196/112 - Subtract the two like fractions:
80/112 - 196/112 = 80 - 196/112 = -116/112 - After reducing the fraction, the answer is -29/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-28/16 5/7-56/16 5/14-28/16 5/7-28/32 15/7-28/16 5/7-84/16 5/21-28/16 5/7-28/48 25/7-28/16 5/35-28/16 5/7-28/80 35/7-28/16 5/49-28/16