Add 12/36 and 15/21
12/36 + 15/21 is 22/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
12/36 = 12 × 7/36 × 7 = 84/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
15/21 = 15 × 12/21 × 12 = 180/252 - Add the two like fractions:
84/252 + 180/252 = 84 + 180/252 = 264/252 - 264/252 simplified gives 22/21
- So, 12/36 + 15/21 = 22/21
In mixed form: 11/21
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