Add 42/21 and 6/36
1st number: 2 0/21, 2nd number: 6/36
42/21 + 6/36 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
42/21 = 42 × 12/21 × 12 = 504/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
6/36 = 6 × 7/36 × 7 = 42/252 - Add the two like fractions:
504/252 + 42/252 = 504 + 42/252 = 546/252 - 546/252 simplified gives 13/6
- So, 42/21 + 6/36 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+6/36 42/21+12/36 42/21+6/72 42/21+18/36 42/63+6/36 42/21+30/36 42/21+42/36