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18 divided by 1 1/2

 Feb 19, 2016
 #1
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18 / 1 1/2

 

First, change 18 into a fraction.

 

18 = 18/1

 

So...

 

18/1 / 1 1/2

 

Next, make 1 1/2 an improper fraction.

 

1 1/2 = 3/2

 

Now we have...

 

18/1 / 3/2.

 

Next, use "keep, change, flip."

 

Keep 18/1...

 

Change 3/2 into its reciprocal...

 

18/1 / 2/3...

 

Flip the division sign into a multiplication one.

 

18/1 * 2/3

 

Now, multiply each numerator by the other and vice versa for the denominators to get your answer.

 

18 * 2 = 36

 

1 * 3 = 3

 

36/3

 

Simplify...

 

12

 Feb 19, 2016

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