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Solve the following system of equations by the substitution method. 8x = 2y + 5 3x = y + 7
Question
Asked 11/25/2014 9:04:03 AM
Updated 11/26/2014 2:15:30 AM
2 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by janezeshun [11/26/2014 2:12:40 AM]
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User: Solve the following system of equations by the substitution method. 8x = 2y + 5 3x = y + 7

Weegy: The solution set of the equation 8x = 2y + 5 3x = y + 7 is {(-9/2, -41/2)}.
emdjay23|Points 18164|

User: Which of the following equations could be the result of using the comparison method to solve the system shown? x - 4y - 1 = 0 x + 5y - 4 = 0 4y + 1 = 4 - 5y. -4y + 1 = 4 - 5y. 4y + 1 = 5y - 4.

User: Solve the following system of equations. 2x + y = 3 x = 2y - 1

User: Which of the following equations could be the result of using the comparison method to solve the system shown? x + y = 5 2x + y = 7 -x - 5 = 7 - 2x. 5 - x = 7 - 2x. 5 - x = 2x - 7.

Weegy: |2x - 5| = 4;

-(2x - 5) = 4; -2x + 5 = 4; -2x = 4 - 5; -2x = -1; x = 1/2
- - -
(2x - 5) = 4; 2x = 4 + 5; 2x = 9; x = 9/2,

x = 1/2 or x = 9/2


User: For the following system, use the second equation to make a substitution for x in the first equation. x + 5y - 10 = 0 x = 2y - 8

Question
Asked 11/25/2014 9:04:03 AM
Updated 11/26/2014 2:15:30 AM
2 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by janezeshun [11/26/2014 2:12:40 AM]
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5 - x = 7 - 2x could be the result of using the comparison method to solve the system shown: x + y = 5 , 2x + y = 7 .
Equation 1 : x + y = 5 , so y = 5 - x
Equation 2 : 2x + y = 7 , so y = 7 - 2x
And 5 - x = 7 - 2x
Added 11/26/2014 2:12:16 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/26/2014 2:30:01 AM]
5
For the following system, use the second equation to make a substitution for x in the first equation : x + 5y - 10 = 0 , x = 2y - 8 , we get 7y - 18 = 0 , so the solutions is x = -20/7 , y = 18/7 .
x + 5y - 10 = 0
2y - 8 + 5y - 10 = 0
7y - 18 = 0
y = 18/7
x = 2*18/7 - 8
x = 36/7 - 56/7
x = - 20/7

Added 11/26/2014 2:15:30 AM
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4 Answers/Comments
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