Add 3/21 and 8/12
3/21 + 8/12 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
3/21 = 3 × 4/21 × 4 = 12/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Add the two like fractions:
12/84 + 56/84 = 12 + 56/84 = 68/84 - 68/84 simplified gives 17/21
- So, 3/21 + 8/12 = 17/21
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