Add 18/8 and 45/81
1st number: 2 2/8, 2nd number: 45/81
18/8 + 45/81 is 101/36.
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,
18/8 = 18 × 81/8 × 81 = 1458/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
45/81 = 45 × 8/81 × 8 = 360/648 - Add the two like fractions:
1458/648 + 360/648 = 1458 + 360/648 = 1818/648 - 1818/648 simplified gives 101/36
- So, 18/8 + 45/81 = 101/36
In mixed form: 229/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+45/81 18/8+90/81 18/16+45/81 54/8+45/81 18/24+45/81 90/8+45/81 18/40+45/81 18/56+45/81