Add 63/18 and 15/12
1st number: 3 9/18, 2nd number: 1 3/12
63/18 + 15/12 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
63/18 = 63 × 2/18 × 2 = 126/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Add the two like fractions:
126/36 + 45/36 = 126 + 45/36 = 171/36 - 171/36 simplified gives 19/4
- So, 63/18 + 15/12 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18+30/12 63/36+15/12 63/18+15/24 63/18+45/12 63/54+15/12 63/18+15/36 63/18+75/12 63/90+15/12 63/18+15/60 63/18+15/84