Add 8/18 and 42/12
1st number: 8/18, 2nd number: 3 6/12
8/18 + 42/12 is 71/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
8/18 = 8 × 2/18 × 2 = 16/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
42/12 = 42 × 3/12 × 3 = 126/36 - Add the two like fractions:
16/36 + 126/36 = 16 + 126/36 = 142/36 - 142/36 simplified gives 71/18
- So, 8/18 + 42/12 = 71/18
In mixed form: 317/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+42/12 8/18+84/12 8/36+42/12 8/18+42/24 24/18+42/12 8/54+42/12 8/18+42/36 40/18+42/12 8/90+42/12 8/18+42/60 56/18+42/12 8/18+42/84