Add 42/6 and 27/21
1st number: 7 0/6, 2nd number: 1 6/21
42/6 + 27/21 is 58/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
42/6 = 42 × 7/6 × 7 = 294/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42 - Add the two like fractions:
294/42 + 54/42 = 294 + 54/42 = 348/42 - 348/42 simplified gives 58/7
- So, 42/6 + 27/21 = 58/7
In mixed form: 82/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6+27/21 42/6+54/21 42/12+27/21 42/6+27/42 42/6+81/21 42/18+27/21 42/6+27/63 42/30+27/21