Add 63/42 and 81/12
1st number: 1 21/42, 2nd number: 6 9/12
63/42 + 81/12 is 33/4.
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,
63/42 = 63 × 2/42 × 2 = 126/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Add the two like fractions:
126/84 + 567/84 = 126 + 567/84 = 693/84 - 693/84 simplified gives 33/4
- So, 63/42 + 81/12 = 33/4
In mixed form: 81/4
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