Add 20/42 and 12/60
20/42 + 12/60 is 71/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
20/42 = 20 × 10/42 × 10 = 200/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
12/60 = 12 × 7/60 × 7 = 84/420 - Add the two like fractions:
200/420 + 84/420 = 200 + 84/420 = 284/420 - 284/420 simplified gives 71/105
- So, 20/42 + 12/60 = 71/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+12/60 20/42+24/60 20/84+12/60 60/42+12/60 20/42+36/60 20/42+84/60