Add 42/54 and 8/18
42/54 + 8/18 is 11/9.
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,
42/54 = 42 × 1/54 × 1 = 42/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
8/18 = 8 × 3/18 × 3 = 24/54 - Add the two like fractions:
42/54 + 24/54 = 42 + 24/54 = 66/54 - 66/54 simplified gives 11/9
- So, 42/54 + 8/18 = 11/9
In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54+8/18 42/54+16/18 42/54+8/36 42/54+24/18 42/54+8/54 42/54+40/18 42/54+8/90 42/54+56/18