Add 81/18 and 45/4
1st number: 4 9/18, 2nd number: 11 1/4
81/18 + 45/4 is 63/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
45/4 = 45 × 9/4 × 9 = 405/36 - Add the two like fractions:
162/36 + 405/36 = 162 + 405/36 = 567/36 - 567/36 simplified gives 63/4
- So, 81/18 + 45/4 = 63/4
In mixed form: 153/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+90/4 81/36+45/4 81/18+45/8 81/54+45/4 81/18+45/12 81/90+45/4 81/18+45/20 81/18+45/28