Add 30/4 and 3/15
1st number: 7 2/4, 2nd number: 3/15
30/4 + 3/15 is 77/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
30/4 = 30 × 15/4 × 15 = 450/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
3/15 = 3 × 4/15 × 4 = 12/60 - Add the two like fractions:
450/60 + 12/60 = 450 + 12/60 = 462/60 - 462/60 simplified gives 77/10
- So, 30/4 + 3/15 = 77/10
In mixed form: 77/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+3/15 30/4+6/15 30/8+3/15 30/4+3/30 90/4+3/15 30/4+9/15 30/12+3/15 30/4+3/45 30/20+3/15 30/4+3/75 30/4+21/15 30/28+3/15