Add 8/14 and 40/21
1st number: 8/14, 2nd number: 1 19/21
8/14 + 40/21 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
8/14 = 8 × 3/14 × 3 = 24/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Add the two like fractions:
24/42 + 80/42 = 24 + 80/42 = 104/42 - 104/42 simplified gives 52/21
- So, 8/14 + 40/21 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/14+40/21 8/14+80/21 8/28+40/21 8/14+40/42 24/14+40/21 8/42+40/21 8/14+40/63 40/14+40/21 8/70+40/21 56/14+40/21 8/98+40/21