Add 36/4 and 3/21
1st number: 9 0/4, 2nd number: 3/21
36/4 + 3/21 is 64/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
36/4 = 36 × 21/4 × 21 = 756/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
3/21 = 3 × 4/21 × 4 = 12/84 - Add the two like fractions:
756/84 + 12/84 = 756 + 12/84 = 768/84 - 768/84 simplified gives 64/7
- So, 36/4 + 3/21 = 64/7
In mixed form: 91/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4+3/21 36/4+6/21 36/8+3/21 36/4+3/42 36/4+9/21 36/12+3/21 36/4+3/63 36/4+15/21 36/20+3/21 36/28+3/21