Add 72/15 and 56/7
1st number: 4 12/15, 2nd number: 8 0/7
72/15 + 56/7 is 64/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
72/15 = 72 × 7/15 × 7 = 504/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
56/7 = 56 × 15/7 × 15 = 840/105 - Add the two like fractions:
504/105 + 840/105 = 504 + 840/105 = 1344/105 - 1344/105 simplified gives 64/5
- So, 72/15 + 56/7 = 64/5
In mixed form: 124/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+56/7 72/15+56/14 72/45+56/7 72/15+56/21 72/75+56/7 72/15+56/35 72/15+56/49