Add 30/50 and 42/15
1st number: 30/50, 2nd number: 2 12/15
30/50 + 42/15 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 15 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
30/50 = 30 × 3/50 × 3 = 90/150 - Likewise, for the 2nd fraction, since 15 × 10 = 150,
42/15 = 42 × 10/15 × 10 = 420/150 - Add the two like fractions:
90/150 + 420/150 = 90 + 420/150 = 510/150 - 510/150 simplified gives 17/5
- So, 30/50 + 42/15 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50+42/15 30/50+84/15 30/50+42/30 90/50+42/15 30/50+42/45 30/50+42/75