Add 42/15 and 18/54
1st number: 2 12/15, 2nd number: 18/54
42/15 + 18/54 is 47/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
42/15 = 42 × 18/15 × 18 = 756/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Add the two like fractions:
756/270 + 90/270 = 756 + 90/270 = 846/270 - 846/270 simplified gives 47/15
- So, 42/15 + 18/54 = 47/15
In mixed form: 32/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+18/54 42/15+36/54 42/30+18/54 42/45+18/54 42/15+90/54 42/75+18/54