Add 12/7 and 30/81
1st number: 1 5/7, 2nd number: 30/81
12/7 + 30/81 is 394/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
12/7 = 12 × 81/7 × 81 = 972/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
30/81 = 30 × 7/81 × 7 = 210/567 - Add the two like fractions:
972/567 + 210/567 = 972 + 210/567 = 1182/567 - 1182/567 simplified gives 394/189
- So, 12/7 + 30/81 = 394/189
In mixed form: 216/189
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