Add 20/18 and 63/9
1st number: 1 2/18, 2nd number: 7 0/9
20/18 + 63/9 is 73/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
20/18 = 20 × 1/18 × 1 = 20/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
63/9 = 63 × 2/9 × 2 = 126/18 - Add the two like fractions:
20/18 + 126/18 = 20 + 126/18 = 146/18 - 146/18 simplified gives 73/9
- So, 20/18 + 63/9 = 73/9
In mixed form: 81/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+63/9 20/36+63/9 20/18+63/18 60/18+63/9 20/54+63/9 20/18+63/27 20/90+63/9 20/18+63/45