Add 56/70 and 56/21
1st number: 56/70, 2nd number: 2 14/21
56/70 + 56/21 is 52/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
56/70 = 56 × 3/70 × 3 = 168/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
56/21 = 56 × 10/21 × 10 = 560/210 - Add the two like fractions:
168/210 + 560/210 = 168 + 560/210 = 728/210 - 728/210 simplified gives 52/15
- So, 56/70 + 56/21 = 52/15
In mixed form: 37/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+56/42 56/70+56/63