Add 9/14 and 9/15
9/14 + 9/15 is 87/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
9/14 = 9 × 15/14 × 15 = 135/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
9/15 = 9 × 14/15 × 14 = 126/210 - Add the two like fractions:
135/210 + 126/210 = 135 + 126/210 = 261/210 - 261/210 simplified gives 87/70
- So, 9/14 + 9/15 = 87/70
In mixed form: 117/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/14+9/15 9/14+18/15 9/28+9/15 9/14+9/30 27/14+9/15 9/14+27/15 9/42+9/15 9/14+9/45 45/14+9/15 9/14+45/15 9/70+9/15 9/14+9/75 63/14+9/15 9/14+63/15 9/98+9/15