Add 4/84 and 20/28
4/84 + 20/28 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Add the two like fractions:
4/84 + 60/84 = 4 + 60/84 = 64/84 - 64/84 simplified gives 16/21
- So, 4/84 + 20/28 = 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/84+20/28 4/84+40/28 4/84+20/56 12/84+20/28 4/84+60/28 4/84+20/84 20/84+20/28 28/84+20/28