Add 9/80 and 81/5
1st number: 9/80, 2nd number: 16 1/5
9/80 + 81/5 is 261/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
9/80 = 9 × 1/80 × 1 = 9/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
81/5 = 81 × 16/5 × 16 = 1296/80 - Add the two like fractions:
9/80 + 1296/80 = 9 + 1296/80 = 1305/80 - 1305/80 simplified gives 261/16
- So, 9/80 + 81/5 = 261/16
In mixed form: 165/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/80+81/5 9/80+81/10 27/80+81/5 9/80+81/15 45/80+81/5 9/80+81/25 63/80+81/5 9/80+81/35