Add 72/12 and 84/28
1st number: 6 0/12, 2nd number: 3 0/28
72/12 + 84/28 is 9/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
84/28 = 84 × 3/28 × 3 = 252/84 - Add the two like fractions:
504/84 + 252/84 = 504 + 252/84 = 756/84 - 756/84 simplified gives 9/1
- So, 72/12 + 84/28 = 9/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24+84/28 72/12+84/56 72/36+84/28 72/60+84/28 72/84+84/28