Add 12/8 and 42/27
1st number: 1 4/8, 2nd number: 1 15/27
12/8 + 42/27 is 55/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
12/8 = 12 × 27/8 × 27 = 324/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
42/27 = 42 × 8/27 × 8 = 336/216 - Add the two like fractions:
324/216 + 336/216 = 324 + 336/216 = 660/216 - 660/216 simplified gives 55/18
- So, 12/8 + 42/27 = 55/18
In mixed form: 31/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+42/27 12/8+84/27 12/16+42/27 12/8+42/54 36/8+42/27 12/24+42/27 12/8+42/81 60/8+42/27 12/40+42/27 84/8+42/27 12/56+42/27