Add 42/54 and 18/8
1st number: 42/54, 2nd number: 2 2/8
42/54 + 18/8 is 109/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 8 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
42/54 = 42 × 4/54 × 4 = 168/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
18/8 = 18 × 27/8 × 27 = 486/216 - Add the two like fractions:
168/216 + 486/216 = 168 + 486/216 = 654/216 - 654/216 simplified gives 109/36
- So, 42/54 + 18/8 = 109/36
In mixed form: 31/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54+18/8 42/54+36/8 42/54+18/16 42/54+54/8 42/54+18/24 42/54+90/8 42/54+18/40 42/54+18/56