Add 42/18 and 54/27
1st number: 2 6/18, 2nd number: 2 0/27
42/18 + 54/27 is 13/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
54/27 = 54 × 2/27 × 2 = 108/54 - Add the two like fractions:
126/54 + 108/54 = 126 + 108/54 = 234/54 - 234/54 simplified gives 13/3
- So, 42/18 + 54/27 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+54/27 42/36+54/27 42/54+54/27 42/18+54/81 42/90+54/27