Add 80/18 and 5/80
1st number: 4 8/18, 2nd number: 5/80
80/18 + 5/80 is 649/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
80/18 = 80 × 40/18 × 40 = 3200/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Add the two like fractions:
3200/720 + 45/720 = 3200 + 45/720 = 3245/720 - 3245/720 simplified gives 649/144
- So, 80/18 + 5/80 = 649/144
In mixed form: 473/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+10/80 80/36+5/80 80/18+15/80 80/54+5/80 80/18+25/80 80/90+5/80 80/18+35/80