Add 40/6 and 1/21
1st number: 6 4/6, 2nd number: 1/21
40/6 + 1/21 is 47/7.
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,
40/6 = 40 × 7/6 × 7 = 280/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Add the two like fractions:
280/42 + 2/42 = 280 + 2/42 = 282/42 - 282/42 simplified gives 47/7
- So, 40/6 + 1/21 = 47/7
In mixed form: 65/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/6+1/21 40/6+2/21 40/12+1/21 40/6+1/42 40/6+3/21 40/18+1/21 40/6+1/63 40/6+5/21 40/30+1/21 40/6+7/21 40/42+1/21