Add 28/56 and 8/18
28/56 + 8/18 is 17/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
8/18 = 8 × 28/18 × 28 = 224/504 - Add the two like fractions:
252/504 + 224/504 = 252 + 224/504 = 476/504 - 476/504 simplified gives 17/18
- So, 28/56 + 8/18 = 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+16/18 28/56+8/36 84/56+8/18 28/56+24/18 28/56+8/54 28/56+40/18 28/56+8/90 28/56+56/18