Add 4/42 and 4/28
4/42 + 4/28 is 5/21.
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,
4/42 = 4 × 2/42 × 2 = 8/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
4/28 = 4 × 3/28 × 3 = 12/84 - Add the two like fractions:
8/84 + 12/84 = 8 + 12/84 = 20/84 - 20/84 simplified gives 5/21
- So, 4/42 + 4/28 = 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+4/28 4/42+8/28 4/84+4/28 4/42+4/56 12/42+4/28 4/42+12/28 4/42+4/84 20/42+4/28 4/42+20/28 28/42+4/28