Subtract 20/16 from 9/28
1st number: 9/28, 2nd number: 1 4/16
9/28 - 20/16 is -13/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 28 × 4 = 112,
9/28 = 9 × 4/28 × 4 = 36/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
20/16 = 20 × 7/16 × 7 = 140/112 - Subtract the two like fractions:
36/112 - 140/112 = 36 - 140/112 = -104/112 - After reducing the fraction, the answer is -13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-20/16 9/28-40/16 9/56-20/16 9/28-20/32 27/28-20/16 9/28-60/16 9/84-20/16 9/28-20/48 45/28-20/16 9/28-20/80 63/28-20/16