+0  
 
0
346
1
avatar

7x + 10 - ( x+ 7 ) =

Guest Feb 1, 2015

Best Answer 

 #1
avatar+92174 
+5

7x + 10 - ( x+ 7 ) =

there is an invisable 1 between the minus sign and the backet.

7x + 10 - 1( x+ 7 ) =

Now the minus sign belongs to the 1

-1(x+7)=-1*x+-1*7 = -x-7

so   

   7x + 10 - ( x+ 7 )

=7x+10     -x-7

=7x-x   +10-7

=6x     +3

Melody  Feb 2, 2015
Sort: 

1+0 Answers

 #1
avatar+92174 
+5
Best Answer

7x + 10 - ( x+ 7 ) =

there is an invisable 1 between the minus sign and the backet.

7x + 10 - 1( x+ 7 ) =

Now the minus sign belongs to the 1

-1(x+7)=-1*x+-1*7 = -x-7

so   

   7x + 10 - ( x+ 7 )

=7x+10     -x-7

=7x-x   +10-7

=6x     +3

Melody  Feb 2, 2015

19 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details