Add 18/4 and 45/5
1st number: 4 2/4, 2nd number: 9 0/5
18/4 + 45/5 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
18/4 = 18 × 5/4 × 5 = 90/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
45/5 = 45 × 4/5 × 4 = 180/20 - Add the two like fractions:
90/20 + 180/20 = 90 + 180/20 = 270/20 - 270/20 simplified gives 27/2
- So, 18/4 + 45/5 = 27/2
In mixed form: 131/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+45/5 18/4+90/5 18/8+45/5 18/4+45/10 54/4+45/5 18/12+45/5 18/4+45/15 90/4+45/5 18/20+45/5 18/4+45/25 18/28+45/5 18/4+45/35