Add 7/30 and 80/18
1st number: 7/30, 2nd number: 4 8/18
7/30 + 80/18 is 421/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
7/30 = 7 × 3/30 × 3 = 21/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Add the two like fractions:
21/90 + 400/90 = 21 + 400/90 = 421/90 - So, 7/30 + 80/18 = 421/90
In mixed form: 461/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+80/18 7/60+80/18 7/30+80/36 21/30+80/18 7/90+80/18 7/30+80/54 35/30+80/18 7/30+80/90 49/30+80/18