Add 56/28 and 12/20
1st number: 2 0/28, 2nd number: 12/20
56/28 + 12/20 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
56/28 = 56 × 5/28 × 5 = 280/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Add the two like fractions:
280/140 + 84/140 = 280 + 84/140 = 364/140 - 364/140 simplified gives 13/5
- So, 56/28 + 12/20 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/28+24/20 56/28+12/40 56/28+36/20 56/84+12/20 56/28+12/60 56/28+60/20 56/28+84/20