Add 25/21 and 16/42
1st number: 1 4/21, 2nd number: 16/42
25/21 + 16/42 is 11/7.
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,
16/42 = 16 × 1/42 × 1 = 16/42 - Add the two like fractions:
50/42 + 16/42 = 50 + 16/42 = 66/42 - 66/42 simplified gives 11/7
- So, 25/21 + 16/42 = 11/7
In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+16/42 25/21+32/42 25/42+16/42 25/21+16/84 75/21+16/42 25/21+48/42 25/63+16/42 25/21+80/42