Add 9/15 and 42/70
9/15 + 42/70 is 6/5.
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,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
126/210 + 126/210 = 126 + 126/210 = 252/210 - 252/210 simplified gives 6/5
- So, 9/15 + 42/70 = 6/5
In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+42/70 9/15+84/70 9/30+42/70 27/15+42/70 9/45+42/70 45/15+42/70 9/75+42/70 63/15+42/70