Add 75/42 and 42/21
1st number: 1 33/42, 2nd number: 2 0/21
75/42 + 42/21 is 53/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
75/42 = 75 × 1/42 × 1 = 75/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
42/21 = 42 × 2/21 × 2 = 84/42 - Add the two like fractions:
75/42 + 84/42 = 75 + 84/42 = 159/42 - 159/42 simplified gives 53/14
- So, 75/42 + 42/21 = 53/14
In mixed form: 311/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42+84/21 75/84+42/21 75/42+42/63