Add 9/28 and 84/18
1st number: 9/28, 2nd number: 4 12/18
9/28 + 84/18 is 419/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
9/28 = 9 × 9/28 × 9 = 81/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
84/18 = 84 × 14/18 × 14 = 1176/252 - Add the two like fractions:
81/252 + 1176/252 = 81 + 1176/252 = 1257/252 - 1257/252 simplified gives 419/84
- So, 9/28 + 84/18 = 419/84
In mixed form: 483/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+84/18 9/56+84/18 9/28+84/36 27/28+84/18 9/84+84/18 9/28+84/54 45/28+84/18 9/28+84/90 63/28+84/18