Add 9/80 and 64/90
9/80 + 64/90 is 593/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
9/80 = 9 × 9/80 × 9 = 81/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
64/90 = 64 × 8/90 × 8 = 512/720 - Add the two like fractions:
81/720 + 512/720 = 81 + 512/720 = 593/720 - So, 9/80 + 64/90 = 593/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/80+64/90 27/80+64/90 45/80+64/90 63/80+64/90