web2.0calc
 
+0  
 

 HELP -Sp1ker7

0
619
1
avatar+5 

what is

$$\underset{\,\,\,\,{\textcolor[rgb]{0.66,0.66,0.66}{\rightarrow {\mathtt{x, y}}}}}{{solve}}{\left(\begin{array}{l}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{y}}={\mathtt{6}}\\
{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{y}}=-{\mathtt{2}}\end{array}\right)}$$

solve for (x,y) sorry my brain crack. forget this. -Sp1ker7

 May 6, 2015

Best Answer 

 #1
avatar+129839 
+5

Adding the equations, we have

2x = 4    so x = 2

And since x - y =  6  ... then, substituting in for x, we have

2 - y  = 6    rearrange  by adding y to both sides and subtracting 6 from both sides

2 - 6  = y

-4  = y

So  (x, y)  = (2, -4)

 

  

 May 6, 2015

1+0 Answers

 #1
avatar+129839 
+5
Best Answer

Adding the equations, we have

2x = 4    so x = 2

And since x - y =  6  ... then, substituting in for x, we have

2 - y  = 6    rearrange  by adding y to both sides and subtracting 6 from both sides

2 - 6  = y

-4  = y

So  (x, y)  = (2, -4)

 

  

CPhill May 6, 2015

2 Online Users

avatar

Top Users

avatar+118651 Melody moderator
avatar+37084 ElectricPavlov
avatar+33653 Alan moderator
avatar+14985 asinus moderator
avatar+5265 rarinstraw1195
avatar+3146 admin administrator
avatar+2973 TitaniumRome
avatar+2651 LiIIiam0216
avatar+2489 GingerAle
avatar+1887 tomtom
avatar+1832 NotThatSmart

Sticky Topics