Add 42/5 and 63/12
1st number: 8 2/5, 2nd number: 5 3/12
42/5 + 63/12 is 273/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
42/5 = 42 × 12/5 × 12 = 504/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
63/12 = 63 × 5/12 × 5 = 315/60 - Add the two like fractions:
504/60 + 315/60 = 504 + 315/60 = 819/60 - 819/60 simplified gives 273/20
- So, 42/5 + 63/12 = 273/20
In mixed form: 1313/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+63/12 42/10+63/12 42/5+63/24 42/15+63/12 42/5+63/36 42/25+63/12 42/5+63/60 42/35+63/12 42/5+63/84