Subtract 90/45 from 2/28
1st number: 2/28, 2nd number: 2 0/45
2/28 - 90/45 is -27/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
2/28 = 2 × 45/28 × 45 = 90/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Subtract the two like fractions:
90/1260 - 2520/1260 = 90 - 2520/1260 = -2430/1260 - After reducing the fraction, the answer is -27/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-90/45 2/56-90/45 6/28-90/45 2/84-90/45 10/28-90/45 14/28-90/45