Add 8/21 and 36/49
8/21 + 36/49 is 164/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
8/21 = 8 × 7/21 × 7 = 56/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
36/49 = 36 × 3/49 × 3 = 108/147 - Add the two like fractions:
56/147 + 108/147 = 56 + 108/147 = 164/147 - So, 8/21 + 36/49 = 164/147
In mixed form: 117/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+36/49 8/21+72/49 8/42+36/49 8/21+36/98 24/21+36/49 8/63+36/49 40/21+36/49 56/21+36/49