Add 56/21 and 42/18
1st number: 2 14/21, 2nd number: 2 6/18
56/21 + 42/18 is 5/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
56/21 = 56 × 6/21 × 6 = 336/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Add the two like fractions:
336/126 + 294/126 = 336 + 294/126 = 630/126 - 630/126 simplified gives 5/1
- So, 56/21 + 42/18 = 5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+84/18 56/42+42/18 56/21+42/36 56/63+42/18 56/21+42/54 56/21+42/90