Add 21/14 and 84/42
1st number: 1 7/14, 2nd number: 2 0/42
21/14 + 84/42 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
21/14 = 21 × 3/14 × 3 = 63/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
84/42 = 84 × 1/42 × 1 = 84/42 - Add the two like fractions:
63/42 + 84/42 = 63 + 84/42 = 147/42 - 147/42 simplified gives 7/2
- So, 21/14 + 84/42 = 7/2
In mixed form: 31/2
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