Add 18/45 and 20/6
1st number: 18/45, 2nd number: 3 2/6
18/45 + 20/6 is 56/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 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 6 × 15 = 90,
20/6 = 20 × 15/6 × 15 = 300/90 - Add the two like fractions:
36/90 + 300/90 = 36 + 300/90 = 336/90 - 336/90 simplified gives 56/15
- So, 18/45 + 20/6 = 56/15
In mixed form: 311/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+20/6 18/45+40/6 18/90+20/6 18/45+20/12 54/45+20/6 18/45+60/6 18/45+20/18 90/45+20/6 18/45+20/30 18/45+20/42