Add 75/21 and 3/84
1st number: 3 12/21, 2nd number: 3/84
75/21 + 3/84 is 101/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
75/21 = 75 × 4/21 × 4 = 300/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
3/84 = 3 × 1/84 × 1 = 3/84 - Add the two like fractions:
300/84 + 3/84 = 300 + 3/84 = 303/84 - 303/84 simplified gives 101/28
- So, 75/21 + 3/84 = 101/28
In mixed form: 317/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/21+6/84 75/42+3/84 75/21+9/84 75/63+3/84 75/21+15/84 75/21+21/84