Add 9/15 and 84/70
1st number: 9/15, 2nd number: 1 14/70
9/15 + 84/70 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
9/15 = 9 × 14/15 × 14 = 126/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
84/70 = 84 × 3/70 × 3 = 252/210 - Add the two like fractions:
126/210 + 252/210 = 126 + 252/210 = 378/210 - 378/210 simplified gives 9/5
- So, 9/15 + 84/70 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+84/70 9/30+84/70 27/15+84/70 9/45+84/70 45/15+84/70 9/75+84/70 63/15+84/70