Add 30/2 and 2/21
1st number: 15 0/2, 2nd number: 2/21
30/2 + 2/21 is 317/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
30/2 = 30 × 21/2 × 21 = 630/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
2/21 = 2 × 2/21 × 2 = 4/42 - Add the two like fractions:
630/42 + 4/42 = 630 + 4/42 = 634/42 - 634/42 simplified gives 317/21
- So, 30/2 + 2/21 = 317/21
In mixed form: 152/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/2+2/21 30/2+4/21 30/4+2/21 30/2+2/42 90/2+2/21 30/2+6/21 30/6+2/21 30/2+2/63 30/2+10/21 30/10+2/21 30/2+14/21 30/14+2/21