Add 18/42 and 8/12
18/42 + 8/12 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
18/42 = 18 × 2/42 × 2 = 36/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Add the two like fractions:
36/84 + 56/84 = 36 + 56/84 = 92/84 - 92/84 simplified gives 23/21
- So, 18/42 + 8/12 = 23/21
In mixed form: 12/21
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