Add 21/42 and 15/3
1st number: 21/42, 2nd number: 5 0/3
21/42 + 15/3 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
15/3 = 15 × 14/3 × 14 = 210/42 - Add the two like fractions:
21/42 + 210/42 = 21 + 210/42 = 231/42 - 231/42 simplified gives 11/2
- So, 21/42 + 15/3 = 11/2
In mixed form: 51/2
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