Add 18/36 and 75/20
1st number: 18/36, 2nd number: 3 15/20
18/36 + 75/20 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
18/36 = 18 × 5/36 × 5 = 90/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
75/20 = 75 × 9/20 × 9 = 675/180 - Add the two like fractions:
90/180 + 675/180 = 90 + 675/180 = 765/180 - 765/180 simplified gives 17/4
- So, 18/36 + 75/20 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72+75/20 18/36+75/40 54/36+75/20 18/36+75/60 90/36+75/20