Solve the system by elimination.
4x + y = 8
-3x - y = 0

Using the elimination method: 4x + y = 8 -3x - y = 0 (4x + y = 8) * 3 12x + 3y= 24 (-3x - y = 0) * 4 -12x - 4y = 0 (12x + 3y = 24) + (-12x - 4y = 0) -y = 24 y = 24 4x + (-24) = 8 4x - 24 = 8 4x = 8 + 24 4x = 32 x = 32/4 x = 8 The solution set is: (8, -24)

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Asked 2/16/2012 4:50:54 PM

Updated 9/10/2017 3:20:56 PM

1 Answer/Comment

Edited by Masamune [9/10/2017 3:20:56 PM]

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Using the elimination method:

4x + y = 8

-3x - y = 0

(4x + y = 8) * 3

12x + 3y= 24

(-3x - y = 0) * 4

-12x - 4y = 0

(12x + 3y = 24) + (-12x - 4y = 0)

-y = 24

y = 24

4x + (-24) = 8

4x - 24 = 8

4x = 8 + 24

4x = 32

x = 32/4

x = 8

The solution set is: (8, -24)

4x + y = 8

-3x - y = 0

(4x + y = 8) * 3

12x + 3y= 24

(-3x - y = 0) * 4

-12x - 4y = 0

(12x + 3y = 24) + (-12x - 4y = 0)

-y = 24

y = 24

4x + (-24) = 8

4x - 24 = 8

4x = 8 + 24

4x = 32

x = 32/4

x = 8

The solution set is: (8, -24)

Added 9/10/2017 1:32:51 AM

This answer has been confirmed as correct and helpful.

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simply the equation 4^-2

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Not Answered

Updated 6/27/2016 9:10:46 AM

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4^-2

= 1/4^2

= 1/16

= 1/4^2

= 1/16

Added 6/27/2016 9:10:46 AM

This answer has been confirmed as correct and helpful.

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