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