Add 30/81 and 5/7
30/81 + 5/7 is 205/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 7 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
30/81 = 30 × 7/81 × 7 = 210/567 - Likewise, for the 2nd fraction, since 7 × 81 = 567,
5/7 = 5 × 81/7 × 81 = 405/567 - Add the two like fractions:
210/567 + 405/567 = 210 + 405/567 = 615/567 - 615/567 simplified gives 205/189
- So, 30/81 + 5/7 = 205/189
In mixed form: 116/189
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