Add 15/21 and 1/49
15/21 + 1/49 is 36/49.
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,
15/21 = 15 × 7/21 × 7 = 105/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
1/49 = 1 × 3/49 × 3 = 3/147 - Add the two like fractions:
105/147 + 3/147 = 105 + 3/147 = 108/147 - 108/147 simplified gives 36/49
- So, 15/21 + 1/49 = 36/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+1/49 15/21+2/49 15/42+1/49 15/21+1/98 45/21+1/49 15/21+3/49 15/63+1/49 75/21+1/49 15/21+5/49 15/21+7/49