Add 35/21 and 42/18
1st number: 1 14/21, 2nd number: 2 6/18
35/21 + 42/18 is 4/1.
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,
35/21 = 35 × 6/21 × 6 = 210/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Add the two like fractions:
210/126 + 294/126 = 210 + 294/126 = 504/126 - 504/126 simplified gives 4/1
- So, 35/21 + 42/18 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+42/18 35/21+84/18 35/42+42/18 35/21+42/36 35/63+42/18 35/21+42/54 35/21+42/90