Add 18/80 and 72/8
1st number: 18/80, 2nd number: 9 0/8
18/80 + 72/8 is 369/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 8 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
72/8 = 72 × 10/8 × 10 = 720/80 - Add the two like fractions:
18/80 + 720/80 = 18 + 720/80 = 738/80 - 738/80 simplified gives 369/40
- So, 18/80 + 72/8 = 369/40
In mixed form: 99/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80+72/8 18/80+72/16 54/80+72/8 18/80+72/24 90/80+72/8 18/80+72/40 18/80+72/56