Add 21/6 and 84/21
1st number: 3 3/6, 2nd number: 4 0/21
21/6 + 84/21 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
21/6 = 21 × 7/6 × 7 = 147/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
84/21 = 84 × 2/21 × 2 = 168/42 - Add the two like fractions:
147/42 + 168/42 = 147 + 168/42 = 315/42 - 315/42 simplified gives 15/2
- So, 21/6 + 84/21 = 15/2
In mixed form: 71/2
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