Add 4/8 and 90/81
1st number: 4/8, 2nd number: 1 9/81
4/8 + 90/81 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
4/8 = 4 × 81/8 × 81 = 324/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
90/81 = 90 × 8/81 × 8 = 720/648 - Add the two like fractions:
324/648 + 720/648 = 324 + 720/648 = 1044/648 - 1044/648 simplified gives 29/18
- So, 4/8 + 90/81 = 29/18
In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/16+90/81 12/8+90/81 4/24+90/81 20/8+90/81 4/40+90/81 28/8+90/81 4/56+90/81