Add 30/2 and 10/21
1st number: 15 0/2, 2nd number: 10/21
30/2 + 10/21 is 325/21.
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,
10/21 = 10 × 2/21 × 2 = 20/42 - Add the two like fractions:
630/42 + 20/42 = 630 + 20/42 = 650/42 - 650/42 simplified gives 325/21
- So, 30/2 + 10/21 = 325/21
In mixed form: 1510/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/2+10/21 30/2+20/21 30/4+10/21 30/2+10/42 90/2+10/21 30/2+30/21 30/6+10/21 30/2+10/63 30/2+50/21 30/10+10/21 30/2+70/21 30/14+10/21