Add 28/12 and 10/7
1st number: 2 4/12, 2nd number: 1 3/7
28/12 + 10/7 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
10/7 = 10 × 12/7 × 12 = 120/84 - Add the two like fractions:
196/84 + 120/84 = 196 + 120/84 = 316/84 - 316/84 simplified gives 79/21
- So, 28/12 + 10/7 = 79/21
In mixed form: 316/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+10/7 28/12+20/7 28/24+10/7 28/12+10/14 84/12+10/7 28/12+30/7 28/36+10/7 28/12+10/21 28/12+50/7 28/60+10/7 28/12+10/35 28/12+70/7 28/84+10/7 28/12+10/49