Add 12/2 and 81/21
1st number: 6 0/2, 2nd number: 3 18/21
12/2 + 81/21 is 69/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
12/2 = 12 × 21/2 × 21 = 252/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
81/21 = 81 × 2/21 × 2 = 162/42 - Add the two like fractions:
252/42 + 162/42 = 252 + 162/42 = 414/42 - 414/42 simplified gives 69/7
- So, 12/2 + 81/21 = 69/7
In mixed form: 96/7
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