Add 20/18 and 2/45
1st number: 1 2/18, 2nd number: 2/45
20/18 + 2/45 is 52/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
2/45 = 2 × 2/45 × 2 = 4/90 - Add the two like fractions:
100/90 + 4/90 = 100 + 4/90 = 104/90 - 104/90 simplified gives 52/45
- So, 20/18 + 2/45 = 52/45
In mixed form: 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+2/45 20/18+4/45 20/36+2/45 20/18+2/90 60/18+2/45 20/18+6/45 20/54+2/45 20/18+10/45 20/90+2/45 20/18+14/45