Add 5/21 and 40/8
1st number: 5/21, 2nd number: 5 0/8
5/21 + 40/8 is 110/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
40/8 = 40 × 21/8 × 21 = 840/168 - Add the two like fractions:
40/168 + 840/168 = 40 + 840/168 = 880/168 - 880/168 simplified gives 110/21
- So, 5/21 + 40/8 = 110/21
In mixed form: 55/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+40/8 5/21+80/8 5/42+40/8 5/21+40/16 15/21+40/8 5/63+40/8 5/21+40/24 25/21+40/8 35/21+40/8 5/21+40/56