Subtract 21/90 from 24/56
24/56 - 21/90 is 41/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
24/56 = 24 × 45/56 × 45 = 1080/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
21/90 = 21 × 28/90 × 28 = 588/2520 - Subtract the two like fractions:
1080/2520 - 588/2520 = 1080 - 588/2520 = 492/2520 - After reducing the fraction, the answer is 41/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/56-21/90 24/56-42/90 72/56-21/90 24/56-63/90