Add 18/15 and 30/27
1st number: 1 3/15, 2nd number: 1 3/27
18/15 + 30/27 is 104/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
18/15 = 18 × 9/15 × 9 = 162/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
30/27 = 30 × 5/27 × 5 = 150/135 - Add the two like fractions:
162/135 + 150/135 = 162 + 150/135 = 312/135 - 312/135 simplified gives 104/45
- So, 18/15 + 30/27 = 104/45
In mixed form: 214/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+30/27 18/15+60/27 18/30+30/27 18/15+30/54 54/15+30/27 18/15+90/27 18/45+30/27 18/15+30/81 90/15+30/27 18/75+30/27