Subtract 63/28 from 27/72
1st number: 27/72, 2nd number: 2 7/28
27/72 - 63/28 is -15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
63/28 = 63 × 18/28 × 18 = 1134/504 - Subtract the two like fractions:
189/504 - 1134/504 = 189 - 1134/504 = -945/504 - After reducing the fraction, the answer is -15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72-63/28 27/72-63/56 81/72-63/28 27/72-63/84