Add 12/18 and 21/42
12/18 + 21/42 is 7/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
21/42 = 21 × 3/42 × 3 = 63/126 - Add the two like fractions:
84/126 + 63/126 = 84 + 63/126 = 147/126 - 147/126 simplified gives 7/6
- So, 12/18 + 21/42 = 7/6
In mixed form: 11/6
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