Add 21/6 and 6/42
1st number: 3 3/6, 2nd number: 6/42
21/6 + 6/42 is 51/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
21/6 = 21 × 7/6 × 7 = 147/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
6/42 = 6 × 1/42 × 1 = 6/42 - Add the two like fractions:
147/42 + 6/42 = 147 + 6/42 = 153/42 - 153/42 simplified gives 51/14
- So, 21/6 + 6/42 = 51/14
In mixed form: 39/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+6/42 21/6+12/42 21/12+6/42 21/6+6/84 63/6+6/42 21/6+18/42 21/18+6/42 21/6+30/42 21/30+6/42 21/42+6/42