Add 30/84 and 81/42
1st number: 30/84, 2nd number: 1 39/42
30/84 + 81/42 is 16/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Add the two like fractions:
30/84 + 162/84 = 30 + 162/84 = 192/84 - 192/84 simplified gives 16/7
- So, 30/84 + 81/42 = 16/7
In mixed form: 22/7
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