Add 28/84 and 2/8
28/84 + 2/8 is 7/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
28/84 = 28 × 2/84 × 2 = 56/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
2/8 = 2 × 21/8 × 21 = 42/168 - Add the two like fractions:
56/168 + 42/168 = 56 + 42/168 = 98/168 - 98/168 simplified gives 7/12
- So, 28/84 + 2/8 = 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+2/8 28/84+4/8 28/84+2/16 28/84+6/8 28/84+2/24 28/84+10/8 28/84+2/40 28/84+14/8 28/84+2/56