Add 30/15 and 20/4
1st number: 2 0/15, 2nd number: 5 0/4
30/15 + 20/4 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
30/15 = 30 × 4/15 × 4 = 120/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
20/4 = 20 × 15/4 × 15 = 300/60 - Add the two like fractions:
120/60 + 300/60 = 120 + 300/60 = 420/60 - 420/60 simplified gives 7/1
- So, 30/15 + 20/4 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+20/4 30/15+40/4 30/15+20/8 90/15+20/4 30/15+60/4 30/45+20/4 30/15+20/12 30/75+20/4 30/15+20/28