Add 18/27 and 12/30
18/27 + 12/30 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
18/27 = 18 × 10/27 × 10 = 180/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
12/30 = 12 × 9/30 × 9 = 108/270 - Add the two like fractions:
180/270 + 108/270 = 180 + 108/270 = 288/270 - 288/270 simplified gives 16/15
- So, 18/27 + 12/30 = 16/15
In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+12/30 18/27+24/30 18/54+12/30 18/27+12/60 54/27+12/30 18/27+36/30 18/81+12/30 18/27+12/90 90/27+12/30 18/27+60/30 18/27+84/30