Add 21/9 and 42/72
1st number: 2 3/9, 2nd number: 42/72
21/9 + 42/72 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
21/9 = 21 × 8/9 × 8 = 168/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
168/72 + 42/72 = 168 + 42/72 = 210/72 - 210/72 simplified gives 35/12
- So, 21/9 + 42/72 = 35/12
In mixed form: 211/12
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