Add 42/9 and 30/15
1st number: 4 6/9, 2nd number: 2 0/15
42/9 + 30/15 is 20/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
42/9 = 42 × 5/9 × 5 = 210/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
30/15 = 30 × 3/15 × 3 = 90/45 - Add the two like fractions:
210/45 + 90/45 = 210 + 90/45 = 300/45 - 300/45 simplified gives 20/3
- So, 42/9 + 30/15 = 20/3
In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+30/15 42/9+60/15 42/18+30/15 42/9+90/15 42/27+30/15 42/9+30/45 42/45+30/15 42/9+30/75 42/63+30/15