Add 81/18 and 45/10
1st number: 4 9/18, 2nd number: 4 5/10
81/18 + 45/10 is 9/1.
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,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
45/10 = 45 × 9/10 × 9 = 405/90 - Add the two like fractions:
405/90 + 405/90 = 405 + 405/90 = 810/90 - 810/90 simplified gives 9/1
- So, 81/18 + 45/10 = 9/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+90/10 81/36+45/10 81/18+45/20 81/54+45/10 81/18+45/30 81/90+45/10 81/18+45/50 81/18+45/70