Add 21/12 and 4/72
1st number: 1 9/12, 2nd number: 4/72
21/12 + 4/72 is 65/36.
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,
21/12 = 21 × 6/12 × 6 = 126/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
4/72 = 4 × 1/72 × 1 = 4/72 - Add the two like fractions:
126/72 + 4/72 = 126 + 4/72 = 130/72 - 130/72 simplified gives 65/36
- So, 21/12 + 4/72 = 65/36
In mixed form: 129/36
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