Add 45/12 and 15/42
1st number: 3 9/12, 2nd number: 15/42
45/12 + 15/42 is 115/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Add the two like fractions:
315/84 + 30/84 = 315 + 30/84 = 345/84 - 345/84 simplified gives 115/28
- So, 45/12 + 15/42 = 115/28
In mixed form: 43/28
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