Add 45/12 and 81/18
1st number: 3 9/12, 2nd number: 4 9/18
45/12 + 81/18 is 33/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 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 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Add the two like fractions:
135/36 + 162/36 = 135 + 162/36 = 297/36 - 297/36 simplified gives 33/4
- So, 45/12 + 81/18 = 33/4
In mixed form: 81/4
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