Add 9/15 and 15/80
9/15 + 15/80 is 63/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
9/15 = 9 × 16/15 × 16 = 144/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
15/80 = 15 × 3/80 × 3 = 45/240 - Add the two like fractions:
144/240 + 45/240 = 144 + 45/240 = 189/240 - 189/240 simplified gives 63/80
- So, 9/15 + 15/80 = 63/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+15/80 9/15+30/80 9/30+15/80 27/15+15/80 9/15+45/80 9/45+15/80 45/15+15/80 9/15+75/80 9/75+15/80 63/15+15/80