Add 30/4 and 15/5
1st number: 7 2/4, 2nd number: 3 0/5
30/4 + 15/5 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
30/4 = 30 × 5/4 × 5 = 150/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
15/5 = 15 × 4/5 × 4 = 60/20 - Add the two like fractions:
150/20 + 60/20 = 150 + 60/20 = 210/20 - 210/20 simplified gives 21/2
- So, 30/4 + 15/5 = 21/2
In mixed form: 101/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+15/5 30/4+30/5 30/8+15/5 30/4+15/10 90/4+15/5 30/4+45/5 30/12+15/5 30/4+75/5 30/20+15/5 30/4+15/25 30/28+15/5 30/4+15/35