Add 42/18 and 15/36
1st number: 2 6/18, 2nd number: 15/36
42/18 + 15/36 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
42/18 = 42 × 2/18 × 2 = 84/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
15/36 = 15 × 1/36 × 1 = 15/36 - Add the two like fractions:
84/36 + 15/36 = 84 + 15/36 = 99/36 - 99/36 simplified gives 11/4
- So, 42/18 + 15/36 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+15/36 42/18+30/36 42/36+15/36 42/18+15/72 42/18+45/36 42/54+15/36 42/18+75/36 42/90+15/36