Add 20/72 and 9/4
1st number: 20/72, 2nd number: 2 1/4
20/72 + 9/4 is 91/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 4 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Likewise, for the 2nd fraction, since 4 × 18 = 72,
9/4 = 9 × 18/4 × 18 = 162/72 - Add the two like fractions:
20/72 + 162/72 = 20 + 162/72 = 182/72 - 182/72 simplified gives 91/36
- So, 20/72 + 9/4 = 91/36
In mixed form: 219/36
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