Add 60/42 and 80/20
1st number: 1 18/42, 2nd number: 4 0/20
60/42 + 80/20 is 38/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
60/42 = 60 × 10/42 × 10 = 600/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
80/20 = 80 × 21/20 × 21 = 1680/420 - Add the two like fractions:
600/420 + 1680/420 = 600 + 1680/420 = 2280/420 - 2280/420 simplified gives 38/7
- So, 60/42 + 80/20 = 38/7
In mixed form: 53/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+80/20 60/42+80/40 60/42+80/60