Add 42/18 and 28/30
1st number: 2 6/18, 2nd number: 28/30
42/18 + 28/30 is 49/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Add the two like fractions:
210/90 + 84/90 = 210 + 84/90 = 294/90 - 294/90 simplified gives 49/15
- So, 42/18 + 28/30 = 49/15
In mixed form: 34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+28/30 42/18+56/30 42/36+28/30 42/18+28/60 42/18+84/30 42/54+28/30 42/18+28/90 42/90+28/30