Add 40/10 and 42/15
1st number: 4 0/10, 2nd number: 2 12/15
40/10 + 42/15 is 34/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
40/10 = 40 × 3/10 × 3 = 120/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Add the two like fractions:
120/30 + 84/30 = 120 + 84/30 = 204/30 - 204/30 simplified gives 34/5
- So, 40/10 + 42/15 = 34/5
In mixed form: 64/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+42/15 40/10+84/15 40/20+42/15 40/10+42/30 40/30+42/15 40/10+42/45 40/50+42/15 40/10+42/75 40/70+42/15