Add 18/2 and 21/42
1st number: 9 0/2, 2nd number: 21/42
18/2 + 21/42 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
18/2 = 18 × 21/2 × 21 = 378/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Add the two like fractions:
378/42 + 21/42 = 378 + 21/42 = 399/42 - 399/42 simplified gives 19/2
- So, 18/2 + 21/42 = 19/2
In mixed form: 91/2
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