Add 84/4 and 81/30
1st number: 21 0/4, 2nd number: 2 21/30
84/4 + 81/30 is 237/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
84/4 = 84 × 15/4 × 15 = 1260/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
81/30 = 81 × 2/30 × 2 = 162/60 - Add the two like fractions:
1260/60 + 162/60 = 1260 + 162/60 = 1422/60 - 1422/60 simplified gives 237/10
- So, 84/4 + 81/30 = 237/10
In mixed form: 237/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+81/30 84/4+81/60 84/12+81/30 84/4+81/90 84/20+81/30 84/28+81/30