Add 20/21 and 7/36
20/21 + 7/36 is 289/252.
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,
20/21 = 20 × 12/21 × 12 = 240/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
7/36 = 7 × 7/36 × 7 = 49/252 - Add the two like fractions:
240/252 + 49/252 = 240 + 49/252 = 289/252 - So, 20/21 + 7/36 = 289/252
In mixed form: 137/252
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