Add 60/42 and 9/21
1st number: 1 18/42, 2nd number: 9/21
60/42 + 9/21 is 13/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
60/42 = 60 × 1/42 × 1 = 60/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42 - Add the two like fractions:
60/42 + 18/42 = 60 + 18/42 = 78/42 - 78/42 simplified gives 13/7
- So, 60/42 + 9/21 = 13/7
In mixed form: 16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+18/21 60/84+9/21 60/42+9/42 60/42+27/21 60/42+9/63 60/42+45/21 60/42+63/21