Add 6/12 and 40/21
1st number: 6/12, 2nd number: 1 19/21
6/12 + 40/21 is 101/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
6/12 = 6 × 7/12 × 7 = 42/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
40/21 = 40 × 4/21 × 4 = 160/84 - Add the two like fractions:
42/84 + 160/84 = 42 + 160/84 = 202/84 - 202/84 simplified gives 101/42
- So, 6/12 + 40/21 = 101/42
In mixed form: 217/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+80/21 6/24+40/21 6/12+40/42 18/12+40/21 6/36+40/21 6/12+40/63 30/12+40/21 6/60+40/21 42/12+40/21 6/84+40/21