Subtract 28/72 from 90/56
1st number: 1 34/56, 2nd number: 28/72
90/56 - 28/72 is 307/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
90/56 = 90 × 9/56 × 9 = 810/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504 - Subtract the two like fractions:
810/504 - 196/504 = 810 - 196/504 = 614/504 - After reducing the fraction, the answer is 307/252
- In mixed form: 155/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56-56/72 90/56-84/72