Add 36/72 and 21/12
1st number: 36/72, 2nd number: 1 9/12
36/72 + 21/12 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
36/72 = 36 × 1/72 × 1 = 36/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
21/12 = 21 × 6/12 × 6 = 126/72 - Add the two like fractions:
36/72 + 126/72 = 36 + 126/72 = 162/72 - 162/72 simplified gives 9/4
- So, 36/72 + 21/12 = 9/4
In mixed form: 21/4
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