Add 28/42 and 4/7
28/42 + 4/7 is 26/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
28/42 = 28 × 1/42 × 1 = 28/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Add the two like fractions:
28/42 + 24/42 = 28 + 24/42 = 52/42 - 52/42 simplified gives 26/21
- So, 28/42 + 4/7 = 26/21
In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+4/7 28/42+8/7 28/84+4/7 28/42+4/14 84/42+4/7 28/42+12/7 28/42+4/21 28/42+20/7 28/42+4/35 28/42+28/7 28/42+4/49