Add 15/2 and 42/81
1st number: 7 1/2, 2nd number: 42/81
15/2 + 42/81 is 433/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
15/2 = 15 × 81/2 × 81 = 1215/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
42/81 = 42 × 2/81 × 2 = 84/162 - Add the two like fractions:
1215/162 + 84/162 = 1215 + 84/162 = 1299/162 - 1299/162 simplified gives 433/54
- So, 15/2 + 42/81 = 433/54
In mixed form: 81/54
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