Add 42/12 and 8/7
1st number: 3 6/12, 2nd number: 1 1/7
42/12 + 8/7 is 65/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
42/12 = 42 × 7/12 × 7 = 294/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
8/7 = 8 × 12/7 × 12 = 96/84 - Add the two like fractions:
294/84 + 96/84 = 294 + 96/84 = 390/84 - 390/84 simplified gives 65/14
- So, 42/12 + 8/7 = 65/14
In mixed form: 49/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+8/7 42/12+16/7 42/24+8/7 42/12+8/14 42/12+24/7 42/36+8/7 42/12+8/21 42/12+40/7 42/60+8/7 42/12+8/35 42/12+56/7 42/84+8/7 42/12+8/49