Add 21/12 and 10/72
1st number: 1 9/12, 2nd number: 10/72
21/12 + 10/72 is 17/9.
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,
10/72 = 10 × 1/72 × 1 = 10/72 - Add the two like fractions:
126/72 + 10/72 = 126 + 10/72 = 136/72 - 136/72 simplified gives 17/9
- So, 21/12 + 10/72 = 17/9
In mixed form: 18/9
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