Add 42/20 and 15/3
1st number: 2 2/20, 2nd number: 5 0/3
42/20 + 15/3 is 71/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 3 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 3 × 20 = 60,
15/3 = 15 × 20/3 × 20 = 300/60 - Add the two like fractions:
126/60 + 300/60 = 126 + 300/60 = 426/60 - 426/60 simplified gives 71/10
- So, 42/20 + 15/3 = 71/10
In mixed form: 71/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+15/3 42/20+30/3 42/40+15/3 42/20+15/6 42/20+45/3 42/60+15/3 42/20+15/9 42/20+75/3 42/20+15/21