Add 36/9 and 4/21
1st number: 4 0/9, 2nd number: 4/21
36/9 + 4/21 is 88/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
36/9 = 36 × 7/9 × 7 = 252/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
4/21 = 4 × 3/21 × 3 = 12/63 - Add the two like fractions:
252/63 + 12/63 = 252 + 12/63 = 264/63 - 264/63 simplified gives 88/21
- So, 36/9 + 4/21 = 88/21
In mixed form: 44/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+4/21 36/9+8/21 36/18+4/21 36/9+4/42 36/9+12/21 36/27+4/21 36/9+4/63 36/9+20/21 36/45+4/21 36/9+28/21 36/63+4/21