Add 18/21 and 16/6
1st number: 18/21, 2nd number: 2 4/6
18/21 + 16/6 is 74/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
16/6 = 16 × 7/6 × 7 = 112/42 - Add the two like fractions:
36/42 + 112/42 = 36 + 112/42 = 148/42 - 148/42 simplified gives 74/21
- So, 18/21 + 16/6 = 74/21
In mixed form: 311/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+16/6 18/21+32/6 18/42+16/6 18/21+16/12 54/21+16/6 18/21+48/6 18/63+16/6 18/21+16/18 90/21+16/6 18/21+80/6 18/21+16/30 18/21+16/42