Add 9/42 and 28/10
1st number: 9/42, 2nd number: 2 8/10
9/42 + 28/10 is 211/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 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 10 × 21 = 210,
28/10 = 28 × 21/10 × 21 = 588/210 - Add the two like fractions:
45/210 + 588/210 = 45 + 588/210 = 633/210 - 633/210 simplified gives 211/70
- So, 9/42 + 28/10 = 211/70
In mixed form: 31/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+28/10 9/42+56/10 9/84+28/10 9/42+28/20 27/42+28/10 9/42+84/10 9/42+28/30 45/42+28/10 9/42+28/50 63/42+28/10 9/42+28/70