Add 56/35 and 21/42
1st number: 1 21/35, 2nd number: 21/42
56/35 + 21/42 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
56/35 = 56 × 6/35 × 6 = 336/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Add the two like fractions:
336/210 + 105/210 = 336 + 105/210 = 441/210 - 441/210 simplified gives 21/10
- So, 56/35 + 21/42 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+21/42 56/35+21/84 56/35+63/42