Add 84/72 and 15/36
1st number: 1 12/72, 2nd number: 15/36
84/72 + 15/36 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
84/72 = 84 × 1/72 × 1 = 84/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
15/36 = 15 × 2/36 × 2 = 30/72 - Add the two like fractions:
84/72 + 30/72 = 84 + 30/72 = 114/72 - 114/72 simplified gives 19/12
- So, 84/72 + 15/36 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+30/36 84/72+15/72 84/72+45/36 84/72+75/36