Add 20/18 and 45/10
1st number: 1 2/18, 2nd number: 4 5/10
20/18 + 45/10 is 101/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 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 10 × 9 = 90,
45/10 = 45 × 9/10 × 9 = 405/90 - Add the two like fractions:
100/90 + 405/90 = 100 + 405/90 = 505/90 - 505/90 simplified gives 101/18
- So, 20/18 + 45/10 = 101/18
In mixed form: 511/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+45/10 20/18+90/10 20/36+45/10 20/18+45/20 60/18+45/10 20/54+45/10 20/18+45/30 20/90+45/10 20/18+45/50 20/18+45/70