Add 81/18 and 10/45
1st number: 4 9/18, 2nd number: 10/45
81/18 + 10/45 is 85/18.
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,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
10/45 = 10 × 2/45 × 2 = 20/90 - Add the two like fractions:
405/90 + 20/90 = 405 + 20/90 = 425/90 - 425/90 simplified gives 85/18
- So, 81/18 + 10/45 = 85/18
In mixed form: 413/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+20/45 81/36+10/45 81/18+10/90 81/18+30/45 81/54+10/45 81/18+50/45 81/90+10/45 81/18+70/45