Add 12/84 and 20/42
12/84 + 20/42 is 13/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
12/84 = 12 × 1/84 × 1 = 12/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
20/42 = 20 × 2/42 × 2 = 40/84 - Add the two like fractions:
12/84 + 40/84 = 12 + 40/84 = 52/84 - 52/84 simplified gives 13/21
- So, 12/84 + 20/42 = 13/21
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