Add 36/3 and 8/21
1st number: 12 0/3, 2nd number: 8/21
36/3 + 8/21 is 260/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
36/3 = 36 × 7/3 × 7 = 252/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
8/21 = 8 × 1/21 × 1 = 8/21 - Add the two like fractions:
252/21 + 8/21 = 252 + 8/21 = 260/21 - So, 36/3 + 8/21 = 260/21
In mixed form: 128/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/3+8/21 36/3+16/21 36/6+8/21 36/3+8/42 36/3+24/21 36/9+8/21 36/3+8/63 36/3+40/21 36/15+8/21 36/3+56/21 36/21+8/21