Add 20/36 and 14/21
20/36 + 14/21 is 11/9.
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,
20/36 = 20 × 7/36 × 7 = 140/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
14/21 = 14 × 12/21 × 12 = 168/252 - Add the two like fractions:
140/252 + 168/252 = 140 + 168/252 = 308/252 - 308/252 simplified gives 11/9
- So, 20/36 + 14/21 = 11/9
In mixed form: 12/9
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