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What is the answer to this math problem?

+14 votes
319 views
asked Mar 5, 2014 in Math by smile828 (32,100 points)
-3+2--2-(5/-2)(6)


1 Answer

+3 votes
answered Mar 6, 2014 by whizkid (65,660 points)
selected Mar 31, 2014 by smile828
 
Best answer

-3+2--2-(5/-2)(6)

 

You do the () parts first, but nothing can be simplified further.

-3+2--2-(5/-2)(6)

Next, do multiplications. Treat "--" as -1 times -1 = +1

The -2 in 5/-2 can be brought to the top (-5/2). You are multiplying the top and bottom by -1, so nothing changes. 

-3 + 2+2-(-5/2)(6)

-3 + 2+2+(5/2)(6)

-3 + 2 + 2 + 30/2

Next, do divisions (remember it using: Please Excuse My Dear Aunt Sally ) for the order of operations.

Please - Parentheses  
Excuse - Exponents
My - Multiplication
Dear - Division
Aunt - Addition
Sally - Subtraction

 

-3 + 2 + 2 + 15

Addition is next

-3 + 19

Finally, do subtractions

Answer: 16

 

 

 
commented Mar 8, 2014 by smile828 (32,100 points)
Thank you!
commented Jul 23, 2014 by arkzo (424,120 points)
thank you for answering..

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