Add 42/18 and 2/7
1st number: 2 6/18, 2nd number: 2/7
42/18 + 2/7 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
2/7 = 2 × 18/7 × 18 = 36/126 - Add the two like fractions:
294/126 + 36/126 = 294 + 36/126 = 330/126 - 330/126 simplified gives 55/21
- So, 42/18 + 2/7 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+2/7 42/18+4/7 42/36+2/7 42/18+2/14 42/18+6/7 42/54+2/7 42/18+2/21 42/18+10/7 42/90+2/7 42/18+2/35 42/18+14/7 42/18+2/49