Add 72/81 and 45/18
1st number: 72/81, 2nd number: 2 9/18
72/81 + 45/18 is 61/18.
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,
72/81 = 72 × 2/81 × 2 = 144/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
45/18 = 45 × 9/18 × 9 = 405/162 - Add the two like fractions:
144/162 + 405/162 = 144 + 405/162 = 549/162 - 549/162 simplified gives 61/18
- So, 72/81 + 45/18 = 61/18
In mixed form: 37/18
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