Add 9/90 and 3/80
9/90 + 3/80 is 11/80.
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,
9/90 = 9 × 8/90 × 8 = 72/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Add the two like fractions:
72/720 + 27/720 = 72 + 27/720 = 99/720 - 99/720 simplified gives 11/80
- So, 9/90 + 3/80 = 11/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90+3/80 9/90+6/80 27/90+3/80 9/90+9/80 45/90+3/80 9/90+15/80 63/90+3/80 9/90+21/80