Add 12/30 and 18/54
12/30 + 18/54 is 11/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
12/30 = 12 × 9/30 × 9 = 108/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Add the two like fractions:
108/270 + 90/270 = 108 + 90/270 = 198/270 - 198/270 simplified gives 11/15
- So, 12/30 + 18/54 = 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+18/54 12/30+36/54 12/60+18/54 36/30+18/54 12/90+18/54 60/30+18/54 12/30+90/54 84/30+18/54