Add 7/6 and 20/21
1st number: 1 1/6, 2nd number: 20/21
7/6 + 20/21 is 89/42.
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,
7/6 = 7 × 7/6 × 7 = 49/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Add the two like fractions:
49/42 + 40/42 = 49 + 40/42 = 89/42 - So, 7/6 + 20/21 = 89/42
In mixed form: 25/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/6+20/21 7/6+40/21 7/12+20/21 7/6+20/42 21/6+20/21 7/6+60/21 7/18+20/21 7/6+20/63 35/6+20/21 7/30+20/21 49/6+20/21 7/42+20/21