Add 80/7 and 18/27
1st number: 11 3/7, 2nd number: 18/27
80/7 + 18/27 is 254/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
80/7 = 80 × 27/7 × 27 = 2160/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189 - Add the two like fractions:
2160/189 + 126/189 = 2160 + 126/189 = 2286/189 - 2286/189 simplified gives 254/21
- So, 80/7 + 18/27 = 254/21
In mixed form: 122/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+36/27 80/14+18/27 80/7+18/54 80/7+54/27 80/21+18/27 80/7+18/81 80/7+90/27 80/35+18/27 80/49+18/27