+0  
 
+5
2122
7
avatar+70 

x = 2y - 4

x + 8y = 16

 

using substitution

 Feb 5, 2016

Best Answer 

 #1
avatar
+15

Solve the following system: {x = 2 y-4 x+8 y = 16 Substitute x = 2 y-4 into the second equation: {x = 2 y-4 10 y-4 = 16 In the second equation, look to solve for y: {x = 2 y-4 10 y-4 = 16 Add 4 to both sides: {x = 2 y-4 10 y = 20 Divide both sides by 10: {x = 2 y-4 y = 2 Substitute y = 2 into the first equation: Answer: | | {x = 0          y = 2

 Feb 5, 2016
 #1
avatar
+15
Best Answer

Solve the following system: {x = 2 y-4 x+8 y = 16 Substitute x = 2 y-4 into the second equation: {x = 2 y-4 10 y-4 = 16 In the second equation, look to solve for y: {x = 2 y-4 10 y-4 = 16 Add 4 to both sides: {x = 2 y-4 10 y = 20 Divide both sides by 10: {x = 2 y-4 y = 2 Substitute y = 2 into the first equation: Answer: | | {x = 0          y = 2

Guest Feb 5, 2016
 #2
avatar+14993 
+15

x = 2y - 4

x + 8y = 16

 

2y - 4 + 8y = 16

10y = 20

y = 2 

 

x = 2y - 4

x = 2*2 - 4

x = 0

laugh!

 Feb 5, 2016
 #3
avatar+8581 
+10

Guest beat you to it, Asinus! :)

 Feb 5, 2016
 #4
avatar+14993 
0

Na und ? laugh

 Feb 5, 2016
 #5
avatar+8581 
0

I take it you don't speak English??

 Feb 5, 2016
 #6
avatar+5265 
0

Ich bin mit Google Translate , aber sie war nur , dass zu sagen . Sie hat nichts zu bedeuten , indem sie es .

 Feb 5, 2016
 #7
avatar+70 
0

aparently its german, but thank you;

 

German; Danke

 Feb 5, 2016

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