Add 9/42 and 28/35
9/42 + 28/35 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
28/35 = 28 × 6/35 × 6 = 168/210 - Add the two like fractions:
45/210 + 168/210 = 45 + 168/210 = 213/210 - 213/210 simplified gives 71/70
- So, 9/42 + 28/35 = 71/70
In mixed form: 11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+28/35 9/42+56/35 9/84+28/35 9/42+28/70 27/42+28/35 9/42+84/35 45/42+28/35 63/42+28/35