Add 30/10 and 42/18
1st number: 3 0/10, 2nd number: 2 6/18
30/10 + 42/18 is 16/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
30/10 = 30 × 9/10 × 9 = 270/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Add the two like fractions:
270/90 + 210/90 = 270 + 210/90 = 480/90 - 480/90 simplified gives 16/3
- So, 30/10 + 42/18 = 16/3
In mixed form: 51/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10+42/18 30/10+84/18 30/20+42/18 30/10+42/36 90/10+42/18 30/10+42/54 30/50+42/18 30/10+42/90 30/70+42/18