Add 63/21 and 15/27
1st number: 3 0/21, 2nd number: 15/27
63/21 + 15/27 is 32/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
63/21 = 63 × 9/21 × 9 = 567/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
15/27 = 15 × 7/27 × 7 = 105/189 - Add the two like fractions:
567/189 + 105/189 = 567 + 105/189 = 672/189 - 672/189 simplified gives 32/9
- So, 63/21 + 15/27 = 32/9
In mixed form: 35/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21+30/27 63/42+15/27 63/21+15/54 63/21+45/27 63/21+15/81 63/21+75/27