Add 45/12 and 21/9
1st number: 3 9/12, 2nd number: 2 3/9
45/12 + 21/9 is 73/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Add the two like fractions:
135/36 + 84/36 = 135 + 84/36 = 219/36 - 219/36 simplified gives 73/12
- So, 45/12 + 21/9 = 73/12
In mixed form: 61/12
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