Add 9/12 and 21/72
9/12 + 21/72 is 25/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
9/12 = 9 × 6/12 × 6 = 54/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
54/72 + 21/72 = 54 + 21/72 = 75/72 - 75/72 simplified gives 25/24
- So, 9/12 + 21/72 = 25/24
In mixed form: 11/24
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