Add 8/90 and 9/80
8/90 + 9/80 is 29/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
8/90 = 8 × 8/90 × 8 = 64/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
9/80 = 9 × 9/80 × 9 = 81/720 - Add the two like fractions:
64/720 + 81/720 = 64 + 81/720 = 145/720 - 145/720 simplified gives 29/144
- So, 8/90 + 9/80 = 29/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90+9/80 8/90+18/80 24/90+9/80 8/90+27/80 40/90+9/80 8/90+45/80 56/90+9/80 8/90+63/80