Add 28/5 and 80/18
1st number: 5 3/5, 2nd number: 4 8/18
28/5 + 80/18 is 452/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
28/5 = 28 × 18/5 × 18 = 504/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Add the two like fractions:
504/90 + 400/90 = 504 + 400/90 = 904/90 - 904/90 simplified gives 452/45
- So, 28/5 + 80/18 = 452/45
In mixed form: 102/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+80/18 28/10+80/18 28/5+80/36 84/5+80/18 28/15+80/18 28/5+80/54 28/25+80/18 28/5+80/90 28/35+80/18