Add 5/30 and 40/21
1st number: 5/30, 2nd number: 1 19/21
5/30 + 40/21 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
40/21 = 40 × 10/21 × 10 = 400/210 - Add the two like fractions:
35/210 + 400/210 = 35 + 400/210 = 435/210 - 435/210 simplified gives 29/14
- So, 5/30 + 40/21 = 29/14
In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+40/21 5/30+80/21 5/60+40/21 5/30+40/42 15/30+40/21 5/90+40/21 5/30+40/63 25/30+40/21 35/30+40/21