Add 3/21 and 12/36
3/21 + 12/36 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
3/21 = 3 × 12/21 × 12 = 36/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
12/36 = 12 × 7/36 × 7 = 84/252 - Add the two like fractions:
36/252 + 84/252 = 36 + 84/252 = 120/252 - 120/252 simplified gives 10/21
- So, 3/21 + 12/36 = 10/21
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