Add 4/18 and 45/20
1st number: 4/18, 2nd number: 2 5/20
4/18 + 45/20 is 89/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
4/18 = 4 × 10/18 × 10 = 40/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
45/20 = 45 × 9/20 × 9 = 405/180 - Add the two like fractions:
40/180 + 405/180 = 40 + 405/180 = 445/180 - 445/180 simplified gives 89/36
- So, 4/18 + 45/20 = 89/36
In mixed form: 217/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18+45/20 4/18+90/20 4/36+45/20 4/18+45/40 12/18+45/20 4/54+45/20 4/18+45/60 20/18+45/20 4/90+45/20 28/18+45/20