Add 20/81 and 7/18
20/81 + 7/18 is 103/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
7/18 = 7 × 9/18 × 9 = 63/162 - Add the two like fractions:
40/162 + 63/162 = 40 + 63/162 = 103/162 - So, 20/81 + 7/18 = 103/162
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