+0  
 
-1
40
4
avatar+85 

-4(7r+7)

 Jan 16, 2019
 #1
avatar+96201 
+3

-4 ( 7r + 7)  =

 

-4* 7r    +     - 4 * 7   =

 

-28r    -  28

 

 

cool cool cool

 Jan 16, 2019
 #2
avatar+85 
+2

Merci bon monsieur

McAcey  Jan 16, 2019
edited by McAcey  Jan 16, 2019
 #3
avatar+96201 
+2

De rien.....

 

cool cool  cool

CPhill  Jan 16, 2019
 #4
avatar+3845 
+2

CPhill is right. You can also simplify! -28r-28 becomes, -28(r+1). 

 Jan 16, 2019

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