Add 18/12 and 72/9
1st number: 1 6/12, 2nd number: 8 0/9
18/12 + 72/9 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
18/12 = 18 × 3/12 × 3 = 54/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
72/9 = 72 × 4/9 × 4 = 288/36 - Add the two like fractions:
54/36 + 288/36 = 54 + 288/36 = 342/36 - 342/36 simplified gives 19/2
- So, 18/12 + 72/9 = 19/2
In mixed form: 91/2
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