Add 42/21 and 27/5
1st number: 2 0/21, 2nd number: 5 2/5
42/21 + 27/5 is 37/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
42/21 = 42 × 5/21 × 5 = 210/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
27/5 = 27 × 21/5 × 21 = 567/105 - Add the two like fractions:
210/105 + 567/105 = 210 + 567/105 = 777/105 - 777/105 simplified gives 37/5
- So, 42/21 + 27/5 = 37/5
In mixed form: 72/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+27/5 42/21+54/5 42/21+27/10 42/21+81/5 42/63+27/5 42/21+27/15 42/21+27/25 42/21+27/35