Add 90/8 and 9/72
1st number: 11 2/8, 2nd number: 9/72
90/8 + 9/72 is 91/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72 - Add the two like fractions:
810/72 + 9/72 = 810 + 9/72 = 819/72 - 819/72 simplified gives 91/8
- So, 90/8 + 9/72 = 91/8
In mixed form: 113/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+18/72 90/16+9/72 90/8+27/72 90/24+9/72 90/8+45/72 90/40+9/72 90/8+63/72 90/56+9/72