Add 12/18 and 63/12
1st number: 12/18, 2nd number: 5 3/12
12/18 + 63/12 is 71/12.
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,
12/18 = 12 × 2/18 × 2 = 24/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
63/12 = 63 × 3/12 × 3 = 189/36 - Add the two like fractions:
24/36 + 189/36 = 24 + 189/36 = 213/36 - 213/36 simplified gives 71/12
- So, 12/18 + 63/12 = 71/12
In mixed form: 511/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+63/12 12/36+63/12 12/18+63/24 36/18+63/12 12/54+63/12 12/18+63/36 60/18+63/12 12/90+63/12 12/18+63/60 84/18+63/12 12/18+63/84