Add 9/15 and 45/84
9/15 + 45/84 is 159/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
9/15 = 9 × 28/15 × 28 = 252/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
45/84 = 45 × 5/84 × 5 = 225/420 - Add the two like fractions:
252/420 + 225/420 = 252 + 225/420 = 477/420 - 477/420 simplified gives 159/140
- So, 9/15 + 45/84 = 159/140
In mixed form: 119/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+45/84 9/15+90/84 9/30+45/84 27/15+45/84 9/45+45/84 45/15+45/84 9/75+45/84 63/15+45/84