Add 30/18 and 81/42
1st number: 1 12/18, 2nd number: 1 39/42
30/18 + 81/42 is 151/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
81/42 = 81 × 3/42 × 3 = 243/126 - Add the two like fractions:
210/126 + 243/126 = 210 + 243/126 = 453/126 - 453/126 simplified gives 151/42
- So, 30/18 + 81/42 = 151/42
In mixed form: 325/42
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