Add 42/15 and 63/54
1st number: 2 12/15, 2nd number: 1 9/54
42/15 + 63/54 is 119/30.
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,
63/54 = 63 × 5/54 × 5 = 315/270 - Add the two like fractions:
756/270 + 315/270 = 756 + 315/270 = 1071/270 - 1071/270 simplified gives 119/30
- So, 42/15 + 63/54 = 119/30
In mixed form: 329/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+63/54 42/30+63/54 42/45+63/54 42/75+63/54