Add 12/84 and 40/42
12/84 + 40/42 is 23/21.
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,
40/42 = 40 × 2/42 × 2 = 80/84 - Add the two like fractions:
12/84 + 80/84 = 12 + 80/84 = 92/84 - 92/84 simplified gives 23/21
- So, 12/84 + 40/42 = 23/21
In mixed form: 12/21
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