Add 5/4 and 18/9
1st number: 1 1/4, 2nd number: 2 0/9
5/4 + 18/9 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
5/4 = 5 × 9/4 × 9 = 45/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
18/9 = 18 × 4/9 × 4 = 72/36 - Add the two like fractions:
45/36 + 72/36 = 45 + 72/36 = 117/36 - 117/36 simplified gives 13/4
- So, 5/4 + 18/9 = 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: 10/4+18/9 5/4+36/9 5/8+18/9 15/4+18/9 5/4+54/9 5/12+18/9 5/4+18/27 25/4+18/9 5/4+90/9 5/20+18/9 5/4+18/45 35/4+18/9 5/28+18/9 5/4+18/63