Add 40/12 and 42/10
1st number: 3 4/12, 2nd number: 4 2/10
40/12 + 42/10 is 113/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 10 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60 - Likewise, for the 2nd fraction, since 10 × 6 = 60,
42/10 = 42 × 6/10 × 6 = 252/60 - Add the two like fractions:
200/60 + 252/60 = 200 + 252/60 = 452/60 - 452/60 simplified gives 113/15
- So, 40/12 + 42/10 = 113/15
In mixed form: 78/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+42/10 40/12+84/10 40/24+42/10 40/12+42/20 40/36+42/10 40/12+42/30 40/60+42/10 40/12+42/50 40/84+42/10 40/12+42/70