Add 42/15 and 15/25
1st number: 2 12/15, 2nd number: 15/25
42/15 + 15/25 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 25 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
42/15 = 42 × 5/15 × 5 = 210/75 - Likewise, for the 2nd fraction, since 25 × 3 = 75,
15/25 = 15 × 3/25 × 3 = 45/75 - Add the two like fractions:
210/75 + 45/75 = 210 + 45/75 = 255/75 - 255/75 simplified gives 17/5
- So, 42/15 + 15/25 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+15/25 42/15+30/25 42/30+15/25 42/15+15/50 42/15+45/25 42/45+15/25 42/15+15/75 42/15+75/25 42/75+15/25