Add 28/56 and 12/7
1st number: 28/56, 2nd number: 1 5/7
28/56 + 12/7 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
28/56 = 28 × 1/56 × 1 = 28/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
12/7 = 12 × 8/7 × 8 = 96/56 - Add the two like fractions:
28/56 + 96/56 = 28 + 96/56 = 124/56 - 124/56 simplified gives 31/14
- So, 28/56 + 12/7 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+24/7 28/56+12/14 84/56+12/7 28/56+36/7 28/56+12/21 28/56+60/7 28/56+12/35 28/56+84/7 28/56+12/49