Add 24/21 and 12/27
1st number: 1 3/21, 2nd number: 12/27
24/21 + 12/27 is 100/63.
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,
24/21 = 24 × 9/21 × 9 = 216/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
12/27 = 12 × 7/27 × 7 = 84/189 - Add the two like fractions:
216/189 + 84/189 = 216 + 84/189 = 300/189 - 300/189 simplified gives 100/63
- So, 24/21 + 12/27 = 100/63
In mixed form: 137/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+12/27 24/21+24/27 24/42+12/27 24/21+12/54 72/21+12/27 24/21+36/27 24/63+12/27 24/21+12/81 24/21+60/27 24/21+84/27