Add 12/21 and 15/84
12/21 + 15/84 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
12/21 = 12 × 4/21 × 4 = 48/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Add the two like fractions:
48/84 + 15/84 = 48 + 15/84 = 63/84 - 63/84 simplified gives 3/4
- So, 12/21 + 15/84 = 3/4
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