Add 18/45 and 45/18
1st number: 18/45, 2nd number: 2 9/18
18/45 + 45/18 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
18/45 = 18 × 2/45 × 2 = 36/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Add the two like fractions:
36/90 + 225/90 = 36 + 225/90 = 261/90 - 261/90 simplified gives 29/10
- So, 18/45 + 45/18 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+45/18 18/45+90/18 18/90+45/18 18/45+45/36 54/45+45/18 18/45+45/54 90/45+45/18 18/45+45/90