Add 81/42 and 12/4
1st number: 1 39/42, 2nd number: 3 0/4
81/42 + 12/4 is 69/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
12/4 = 12 × 21/4 × 21 = 252/84 - Add the two like fractions:
162/84 + 252/84 = 162 + 252/84 = 414/84 - 414/84 simplified gives 69/14
- So, 81/42 + 12/4 = 69/14
In mixed form: 413/14
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