Add 20/3 and 42/56
1st number: 6 2/3, 2nd number: 42/56
20/3 + 42/56 is 89/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 3 × 56 = 168,
20/3 = 20 × 56/3 × 56 = 1120/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Add the two like fractions:
1120/168 + 126/168 = 1120 + 126/168 = 1246/168 - 1246/168 simplified gives 89/12
- So, 20/3 + 42/56 = 89/12
In mixed form: 75/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+42/56 20/3+84/56 20/6+42/56 60/3+42/56 20/9+42/56 20/15+42/56 20/21+42/56