Add 30/54 and 20/81
30/54 + 20/81 is 65/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 54 × 3 = 162,
30/54 = 30 × 3/54 × 3 = 90/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Add the two like fractions:
90/162 + 40/162 = 90 + 40/162 = 130/162 - 130/162 simplified gives 65/81
- So, 30/54 + 20/81 = 65/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+20/81 30/54+40/81 90/54+20/81 30/54+60/81