Add 80/42 and 84/81
1st number: 1 38/42, 2nd number: 1 3/81
80/42 + 84/81 is 556/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
80/42 = 80 × 27/42 × 27 = 2160/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
84/81 = 84 × 14/81 × 14 = 1176/1134 - Add the two like fractions:
2160/1134 + 1176/1134 = 2160 + 1176/1134 = 3336/1134 - 3336/1134 simplified gives 556/189
- So, 80/42 + 84/81 = 556/189
In mixed form: 2178/189
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Related: 80/84+84/81