Add 42/81 and 4/7
42/81 + 4/7 is 206/189.
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,
42/81 = 42 × 7/81 × 7 = 294/567 - Likewise, for the 2nd fraction, since 7 × 81 = 567,
4/7 = 4 × 81/7 × 81 = 324/567 - Add the two like fractions:
294/567 + 324/567 = 294 + 324/567 = 618/567 - 618/567 simplified gives 206/189
- So, 42/81 + 4/7 = 206/189
In mixed form: 117/189
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