Add 90/6 and 20/81
1st number: 15 0/6, 2nd number: 20/81
90/6 + 20/81 is 1235/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
90/6 = 90 × 27/6 × 27 = 2430/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Add the two like fractions:
2430/162 + 40/162 = 2430 + 40/162 = 2470/162 - 2470/162 simplified gives 1235/81
- So, 90/6 + 20/81 = 1235/81
In mixed form: 1520/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+40/81 90/12+20/81 90/6+60/81 90/18+20/81 90/30+20/81 90/42+20/81