Subtract 90/28 from 14/18
1st number: 14/18, 2nd number: 3 6/28
14/18 - 90/28 is -307/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
14/18 = 14 × 14/18 × 14 = 196/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Subtract the two like fractions:
196/252 - 810/252 = 196 - 810/252 = -614/252 - After reducing the fraction, the answer is -307/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18-90/28 14/36-90/28 14/18-90/56 42/18-90/28 14/54-90/28 14/18-90/84 70/18-90/28 14/90-90/28 98/18-90/28