Add 84/72 and 63/56
1st number: 1 12/72, 2nd number: 1 7/56
84/72 + 63/56 is 55/24.
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,
84/72 = 84 × 7/72 × 7 = 588/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
63/56 = 63 × 9/56 × 9 = 567/504 - Add the two like fractions:
588/504 + 567/504 = 588 + 567/504 = 1155/504 - 1155/504 simplified gives 55/24
- So, 84/72 + 63/56 = 55/24
In mixed form: 27/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: