Add 80/6 and 42/21
1st number: 13 2/6, 2nd number: 2 0/21
80/6 + 42/21 is 46/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
80/6 = 80 × 7/6 × 7 = 560/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
42/21 = 42 × 2/21 × 2 = 84/42 - Add the two like fractions:
560/42 + 84/42 = 560 + 84/42 = 644/42 - 644/42 simplified gives 46/3
- So, 80/6 + 42/21 = 46/3
In mixed form: 151/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/6+84/21 80/12+42/21 80/18+42/21 80/6+42/63 80/30+42/21 80/42+42/21