Add 1/84 and 1/28
1/84 + 1/28 is 1/21.
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,
1/84 = 1 × 1/84 × 1 = 1/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
1/28 = 1 × 3/28 × 3 = 3/84 - Add the two like fractions:
1/84 + 3/84 = 1 + 3/84 = 4/84 - 4/84 simplified gives 1/21
- So, 1/84 + 1/28 = 1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84+1/28 1/84+2/28 1/84+1/56 3/84+1/28 1/84+3/28 1/84+1/84 5/84+1/28 1/84+5/28 7/84+1/28 1/84+7/28