Add 42/5 and 84/12
1st number: 8 2/5, 2nd number: 7 0/12
42/5 + 84/12 is 77/5.
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,
84/12 = 84 × 5/12 × 5 = 420/60 - Add the two like fractions:
504/60 + 420/60 = 504 + 420/60 = 924/60 - 924/60 simplified gives 77/5
- So, 42/5 + 84/12 = 77/5
In mixed form: 152/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+84/12 42/10+84/12 42/5+84/24 42/15+84/12 42/5+84/36 42/25+84/12 42/5+84/60 42/35+84/12