Add 5/4 and 15/30
1st number: 1 1/4, 2nd number: 15/30
5/4 + 15/30 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
5/4 = 5 × 15/4 × 15 = 75/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
15/30 = 15 × 2/30 × 2 = 30/60 - Add the two like fractions:
75/60 + 30/60 = 75 + 30/60 = 105/60 - 105/60 simplified gives 7/4
- So, 5/4 + 15/30 = 7/4
In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+15/30 5/8+15/30 5/4+15/60 15/4+15/30 5/4+45/30 5/12+15/30 5/4+15/90 25/4+15/30 5/4+75/30 5/20+15/30 35/4+15/30 5/28+15/30