Add 8/18 and 18/90
8/18 + 18/90 is 29/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Add the two like fractions:
40/90 + 18/90 = 40 + 18/90 = 58/90 - 58/90 simplified gives 29/45
- So, 8/18 + 18/90 = 29/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+18/90 8/18+36/90 8/36+18/90 24/18+18/90 8/18+54/90 8/54+18/90 40/18+18/90 8/90+18/90 56/18+18/90