Add 81/54 and 42/18
1st number: 1 27/54, 2nd number: 2 6/18
81/54 + 42/18 is 23/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
81/54 = 81 × 1/54 × 1 = 81/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Add the two like fractions:
81/54 + 126/54 = 81 + 126/54 = 207/54 - 207/54 simplified gives 23/6
- So, 81/54 + 42/18 = 23/6
In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/54+84/18 81/54+42/36 81/54+42/54 81/54+42/90