Add 20/81 and 18/4
1st number: 20/81, 2nd number: 4 2/4
20/81 + 18/4 is 769/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
18/4 = 18 × 81/4 × 81 = 1458/324 - Add the two like fractions:
80/324 + 1458/324 = 80 + 1458/324 = 1538/324 - 1538/324 simplified gives 769/162
- So, 20/81 + 18/4 = 769/162
In mixed form: 4121/162
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