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2x + 2y =8 -8x +y =31
Question
Asked 4/8/2012 3:07:33 PM
Updated 6/19/2014 8:49:01 AM
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Flagged by yeswey [6/19/2014 8:46:17 AM]
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User: solve for substition,

User: 2x + 2y =8 -8x +y =31

Weegy: x=3/2
weesnar|Points 175|

Question
Asked 4/8/2012 3:07:33 PM
Updated 6/19/2014 8:49:01 AM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [6/19/2014 8:46:17 AM]
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2x + 2y = 8 (equation 1)
-8x +y =31 rearranging the equation we get y = 8x + 31 (equation 2)
substitute y in equation 1 using equation 2 the result is:
2x + 2(8x + 31) = 8
2x + 16x + 62 = 8
18x = 8 - 62 = -54
x = -54/18 = -3
y = 8(-3) + 31 = -24 + 31 = 7
The solution for the system 2x + 2y =8 -8x +y =31 is (-3, 7)
Added 6/19/2014 8:49:01 AM
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