Subtract 54/90 from 2/28
2/28 - 54/90 is -37/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 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 90 × 14 = 1260,
54/90 = 54 × 14/90 × 14 = 756/1260 - Subtract the two like fractions:
90/1260 - 756/1260 = 90 - 756/1260 = -666/1260 - After reducing the fraction, the answer is -37/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-54/90 2/56-54/90 6/28-54/90 2/84-54/90 10/28-54/90 14/28-54/90