Add 21/72 and 98/56
1st number: 21/72, 2nd number: 1 42/56
21/72 + 98/56 is 49/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
98/56 = 98 × 9/56 × 9 = 882/504 - Add the two like fractions:
147/504 + 882/504 = 147 + 882/504 = 1029/504 - 1029/504 simplified gives 49/24
- So, 21/72 + 98/56 = 49/24
In mixed form: 21/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/72+98/56 63/72+98/56