Add 5/30 and 80/90
5/30 + 80/90 is 19/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
5/30 = 5 × 3/30 × 3 = 15/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Add the two like fractions:
15/90 + 80/90 = 15 + 80/90 = 95/90 - 95/90 simplified gives 19/18
- So, 5/30 + 80/90 = 19/18
In mixed form: 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+80/90 5/60+80/90 15/30+80/90 5/90+80/90 25/30+80/90 35/30+80/90