Add 10/42 and 12/84
10/42 + 12/84 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
10/42 = 10 × 2/42 × 2 = 20/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
12/84 = 12 × 1/84 × 1 = 12/84 - Add the two like fractions:
20/84 + 12/84 = 20 + 12/84 = 32/84 - 32/84 simplified gives 8/21
- So, 10/42 + 12/84 = 8/21
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