Add 45/18 and 15/12
1st number: 2 9/18, 2nd number: 1 3/12
45/18 + 15/12 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
45/18 = 45 × 2/18 × 2 = 90/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Add the two like fractions:
90/36 + 45/36 = 90 + 45/36 = 135/36 - 135/36 simplified gives 15/4
- So, 45/18 + 15/12 = 15/4
In mixed form: 33/4
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