Add 72/15 and 84/72
1st number: 4 12/15, 2nd number: 1 12/72
72/15 + 84/72 is 179/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
72/15 = 72 × 24/15 × 24 = 1728/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
1728/360 + 420/360 = 1728 + 420/360 = 2148/360 - 2148/360 simplified gives 179/30
- So, 72/15 + 84/72 = 179/30
In mixed form: 529/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+84/72 72/45+84/72 72/75+84/72