Add 15/45 and 42/36
1st number: 15/45, 2nd number: 1 6/36
15/45 + 42/36 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
42/36 = 42 × 5/36 × 5 = 210/180 - Add the two like fractions:
60/180 + 210/180 = 60 + 210/180 = 270/180 - 270/180 simplified gives 3/2
- So, 15/45 + 42/36 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+42/36 15/45+84/36 15/90+42/36 15/45+42/72 75/45+42/36