Add 42/5 and 9/12
1st number: 8 2/5, 2nd number: 9/12
42/5 + 9/12 is 183/20.
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,
9/12 = 9 × 5/12 × 5 = 45/60 - Add the two like fractions:
504/60 + 45/60 = 504 + 45/60 = 549/60 - 549/60 simplified gives 183/20
- So, 42/5 + 9/12 = 183/20
In mixed form: 93/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+9/12 42/5+18/12 42/10+9/12 42/5+9/24 42/5+27/12 42/15+9/12 42/5+9/36 42/5+45/12 42/25+9/12 42/5+9/60 42/5+63/12 42/35+9/12 42/5+9/84