Add 18/9 and 42/72
1st number: 2 0/9, 2nd number: 42/72
18/9 + 42/72 is 31/12.
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,
18/9 = 18 × 8/9 × 8 = 144/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
144/72 + 42/72 = 144 + 42/72 = 186/72 - 186/72 simplified gives 31/12
- So, 18/9 + 42/72 = 31/12
In mixed form: 27/12
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