Add 8/45 and 20/28
8/45 + 20/28 is 281/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
8/45 = 8 × 28/45 × 28 = 224/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
20/28 = 20 × 45/28 × 45 = 900/1260 - Add the two like fractions:
224/1260 + 900/1260 = 224 + 900/1260 = 1124/1260 - 1124/1260 simplified gives 281/315
- So, 8/45 + 20/28 = 281/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45+20/28 8/45+40/28 8/90+20/28 8/45+20/56 24/45+20/28 8/45+60/28 8/45+20/84 40/45+20/28 56/45+20/28