Add 20/42 and 80/25
1st number: 20/42, 2nd number: 3 5/25
20/42 + 80/25 is 386/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
20/42 = 20 × 25/42 × 25 = 500/1050 - Likewise, for the 2nd fraction, since 25 × 42 = 1050,
80/25 = 80 × 42/25 × 42 = 3360/1050 - Add the two like fractions:
500/1050 + 3360/1050 = 500 + 3360/1050 = 3860/1050 - 3860/1050 simplified gives 386/105
- So, 20/42 + 80/25 = 386/105
In mixed form: 371/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+80/25 20/84+80/25 20/42+80/50 60/42+80/25 20/42+80/75