+0  
 
0
785
3
avatar

what is 4z−(−3z)?

Guest Feb 28, 2017
 #1
avatar+92781 
+5

4z−(−3z)

 

\(=4z - - 3z\\ =4z +3z\\ =7z\\ \)

Melody  Feb 28, 2017
 #2
avatar
0

4z-(-3z)

* Product of two negative numbers gives you a positive number.

 

4z+3z=7z

Guest Mar 1, 2017
 #3
avatar+92781 
0

Product means multiply.  

 

The product of -3 and -4 is +12, that is true but it has nothing to do with this question. :)

Melody  Mar 1, 2017

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