Add 42/2 and 45/18
1st number: 21 0/2, 2nd number: 2 9/18
42/2 + 45/18 is 47/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
42/2 = 42 × 9/2 × 9 = 378/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
45/18 = 45 × 1/18 × 1 = 45/18 - Add the two like fractions:
378/18 + 45/18 = 378 + 45/18 = 423/18 - 423/18 simplified gives 47/2
- So, 42/2 + 45/18 = 47/2
In mixed form: 231/2
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