Subtract 14/28 from 28/90
28/90 - 14/28 is -17/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
28/90 = 28 × 14/90 × 14 = 392/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
14/28 = 14 × 45/28 × 45 = 630/1260 - Subtract the two like fractions:
392/1260 - 630/1260 = 392 - 630/1260 = -238/1260 - After reducing the fraction, the answer is -17/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-14/28 28/90-14/56 84/90-14/28 28/90-42/28 28/90-14/84 28/90-70/28 28/90-98/28