Add 18/9 and 45/36
1st number: 2 0/9, 2nd number: 1 9/36
18/9 + 45/36 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
18/9 = 18 × 4/9 × 4 = 72/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
45/36 = 45 × 1/36 × 1 = 45/36 - Add the two like fractions:
72/36 + 45/36 = 72 + 45/36 = 117/36 - 117/36 simplified gives 13/4
- So, 18/9 + 45/36 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+45/36 18/9+90/36 18/9+45/72 54/9+45/36 18/27+45/36 90/9+45/36 18/45+45/36 18/63+45/36