Add 81/7 and 20/36
1st number: 11 4/7, 2nd number: 20/36
81/7 + 20/36 is 764/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
81/7 = 81 × 36/7 × 36 = 2916/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
20/36 = 20 × 7/36 × 7 = 140/252 - Add the two like fractions:
2916/252 + 140/252 = 2916 + 140/252 = 3056/252 - 3056/252 simplified gives 764/63
- So, 81/7 + 20/36 = 764/63
In mixed form: 128/63
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