Add 70/12 and 42/5
1st number: 5 10/12, 2nd number: 8 2/5
70/12 + 42/5 is 427/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
70/12 = 70 × 5/12 × 5 = 350/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
42/5 = 42 × 12/5 × 12 = 504/60 - Add the two like fractions:
350/60 + 504/60 = 350 + 504/60 = 854/60 - 854/60 simplified gives 427/30
- So, 70/12 + 42/5 = 427/30
In mixed form: 147/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+84/5 70/24+42/5 70/12+42/10 70/36+42/5 70/12+42/15 70/60+42/5 70/12+42/25 70/84+42/5 70/12+42/35