Add 25/21 and 9/42
1st number: 1 4/21, 2nd number: 9/42
25/21 + 9/42 is 59/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
25/21 = 25 × 2/21 × 2 = 50/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42 - Add the two like fractions:
50/42 + 9/42 = 50 + 9/42 = 59/42 - So, 25/21 + 9/42 = 59/42
In mixed form: 117/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+9/42 25/21+18/42 25/42+9/42 25/21+9/84 75/21+9/42 25/21+27/42 25/63+9/42 25/21+45/42 25/21+63/42