Subtract 36/90 from 3/28
3/28 - 36/90 is -41/140.
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,
3/28 = 3 × 45/28 × 45 = 135/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
36/90 = 36 × 14/90 × 14 = 504/1260 - Subtract the two like fractions:
135/1260 - 504/1260 = 135 - 504/1260 = -369/1260 - After reducing the fraction, the answer is -41/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28-36/90 3/28-72/90 3/56-36/90 9/28-36/90 3/84-36/90 15/28-36/90 21/28-36/90