Add 40/10 and 42/12
1st number: 4 0/10, 2nd number: 3 6/12
40/10 + 42/12 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
40/10 = 40 × 6/10 × 6 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Add the two like fractions:
240/60 + 210/60 = 240 + 210/60 = 450/60 - 450/60 simplified gives 15/2
- So, 40/10 + 42/12 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+42/12 40/10+84/12 40/20+42/12 40/10+42/24 40/30+42/12 40/10+42/36 40/50+42/12 40/10+42/60 40/70+42/12 40/10+42/84