Add 21/6 and 84/7
1st number: 3 3/6, 2nd number: 12 0/7
21/6 + 84/7 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 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 7 × 6 = 42,
84/7 = 84 × 6/7 × 6 = 504/42 - Add the two like fractions:
147/42 + 504/42 = 147 + 504/42 = 651/42 - 651/42 simplified gives 31/2
- So, 21/6 + 84/7 = 31/2
In mixed form: 151/2
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