Subtract 28/7 from 16/18
1st number: 16/18, 2nd number: 4 0/7
16/18 - 28/7 is -28/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
16/18 = 16 × 7/18 × 7 = 112/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
28/7 = 28 × 18/7 × 18 = 504/126 - Subtract the two like fractions:
112/126 - 504/126 = 112 - 504/126 = -392/126 - After reducing the fraction, the answer is -28/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18-28/7 16/18-56/7 16/36-28/7 16/18-28/14 48/18-28/7 16/18-84/7 16/54-28/7 16/18-28/21 80/18-28/7 16/90-28/7 16/18-28/35 16/18-28/49