Add 2/12 and 18/21
2/12 + 18/21 is 43/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
2/12 = 2 × 7/12 × 7 = 14/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
18/21 = 18 × 4/21 × 4 = 72/84 - Add the two like fractions:
14/84 + 72/84 = 14 + 72/84 = 86/84 - 86/84 simplified gives 43/42
- So, 2/12 + 18/21 = 43/42
In mixed form: 11/42
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