Add 84/42 and 81/12
1st number: 2 0/42, 2nd number: 6 9/12
84/42 + 81/12 is 35/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
84/42 = 84 × 2/42 × 2 = 168/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Add the two like fractions:
168/84 + 567/84 = 168 + 567/84 = 735/84 - 735/84 simplified gives 35/4
- So, 84/42 + 81/12 = 35/4
In mixed form: 83/4
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