Add 30/18 and 9/84
1st number: 1 12/18, 2nd number: 9/84
30/18 + 9/84 is 149/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
30/18 = 30 × 14/18 × 14 = 420/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
9/84 = 9 × 3/84 × 3 = 27/252 - Add the two like fractions:
420/252 + 27/252 = 420 + 27/252 = 447/252 - 447/252 simplified gives 149/84
- So, 30/18 + 9/84 = 149/84
In mixed form: 165/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+9/84 30/18+18/84 30/36+9/84 90/18+9/84 30/18+27/84 30/54+9/84 30/18+45/84 30/90+9/84 30/18+63/84