Add 7/21 and 16/4
1st number: 7/21, 2nd number: 4 0/4
7/21 + 16/4 is 13/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
16/4 = 16 × 21/4 × 21 = 336/84 - Add the two like fractions:
28/84 + 336/84 = 28 + 336/84 = 364/84 - 364/84 simplified gives 13/3
- So, 7/21 + 16/4 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+16/4 7/21+32/4 7/42+16/4 7/21+16/8 7/21+48/4 7/63+16/4 7/21+16/12 35/21+16/4 7/21+80/4 7/21+16/20 49/21+16/4 7/21+16/28