Add 3/42 and 20/28
3/42 + 20/28 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Add the two like fractions:
6/84 + 60/84 = 6 + 60/84 = 66/84 - 66/84 simplified gives 11/14
- So, 3/42 + 20/28 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+20/28 3/42+40/28 3/84+20/28 3/42+20/56 9/42+20/28 3/42+60/28 3/42+20/84 15/42+20/28 21/42+20/28