Add 40/6 and 8/21
1st number: 6 4/6, 2nd number: 8/21
406 + 821 is 14821.
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,
406 = 40 × 76 × 7 = 28042 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
821 = 8 × 221 × 2 = 1642 - Add the two like fractions:
28042 + 1642 = 280 + 1642 = 29642 - 296/42 simplified gives 14821
- So, 40/6 + 8/21 = 148/21
In mixed form: 7121
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/6+8/21 40/6+16/21 40/12+8/21 40/6+8/42 40/6+24/21 40/18+8/21 40/6+8/63 40/6+40/21 40/30+8/21 40/6+56/21 40/42+8/21