Add 42/9 and 81/4
1st number: 4 6/9, 2nd number: 20 1/4
42/9 + 81/4 is 299/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
42/9 = 42 × 4/9 × 4 = 168/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
81/4 = 81 × 9/4 × 9 = 729/36 - Add the two like fractions:
168/36 + 729/36 = 168 + 729/36 = 897/36 - 897/36 simplified gives 299/12
- So, 42/9 + 81/4 = 299/12
In mixed form: 2411/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+81/4 42/18+81/4 42/9+81/8 42/27+81/4 42/9+81/12 42/45+81/4 42/9+81/20 42/63+81/4 42/9+81/28