Add 18/27 and 28/63
18/27 + 28/63 is 10/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
28/63 = 28 × 3/63 × 3 = 84/189 - Add the two like fractions:
126/189 + 84/189 = 126 + 84/189 = 210/189 - 210/189 simplified gives 10/9
- So, 18/27 + 28/63 = 10/9
In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+28/63 18/27+56/63 18/54+28/63 54/27+28/63 18/27+84/63 18/81+28/63 90/27+28/63