Add 18/36 and 90/18
1st number: 18/36, 2nd number: 5 0/18
18/36 + 90/18 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
18/36 = 18 × 1/36 × 1 = 18/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Add the two like fractions:
18/36 + 180/36 = 18 + 180/36 = 198/36 - 198/36 simplified gives 11/2
- So, 18/36 + 90/18 = 11/2
In mixed form: 51/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72+90/18 18/36+90/36 54/36+90/18 18/36+90/54 90/36+90/18