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which answer is correct for this math 6/2(2+1)=? 1 or 9 ?

Guest Aug 3, 2017
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3+0 Answers

 #1
avatar+7056 
+2

    6/2(2+1)           First evaluate the expression in parenthesees.

 

=  6/2(3)               This can be written like this...

 

=  \(\frac62(3) \qquad\leftarrow\) Only the thing immediately following the division sign goes in the denominator.

                            Now we can do multiplication/division.

=  3(3)

 

=  9

hectictar  Aug 3, 2017
 #2
avatar+26689 
+2

6/2(2 + 1) → 6/2*3 → 3*3 → 9

 

6/(2(2 + 1)) → 6/(2*3) → 6/6 → 1

Alan  Aug 3, 2017
 #3
avatar+2615 
+2

Very nice way hectictar and Alan! 

tertre  Aug 3, 2017

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