Subtract 28/16 from 1/7
1st number: 1/7, 2nd number: 1 12/16
1/7 - 28/16 is -45/28.
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,
1/7 = 1 × 16/7 × 16 = 16/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
28/16 = 28 × 7/16 × 7 = 196/112 - Subtract the two like fractions:
16/112 - 196/112 = 16 - 196/112 = -180/112 - After reducing the fraction, the answer is -45/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-28/16 1/7-56/16 1/14-28/16 1/7-28/32 3/7-28/16 1/7-84/16 1/21-28/16 1/7-28/48 5/7-28/16 1/35-28/16 1/7-28/80 1/49-28/16