Add 12/4 and 8/21
1st number: 3 0/4, 2nd number: 8/21
12/4 + 8/21 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
12/4 = 12 × 21/4 × 21 = 252/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
8/21 = 8 × 4/21 × 4 = 32/84 - Add the two like fractions:
252/84 + 32/84 = 252 + 32/84 = 284/84 - 284/84 simplified gives 71/21
- So, 12/4 + 8/21 = 71/21
In mixed form: 38/21
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