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x+3y=18 2x+y=11
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Asked 6/17/2014 5:04:36 AM
Updated 6/18/2014 9:07:30 AM
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User: x+3y=18 2x+y=11

Weegy: Answer: 3y ? 2x + z ? 2x + 3(x + y) is equal to 6y-x+z.

SOLUTION:
3y ? 2x + z ? 2x + 3(x + y).

3y ? 2x + z ? 2x + 3x +3 y.

3y+3 y ? 2x ? 2x + 3x + z .

6y-4x+3x+z.

6y-x+z



User: (7-2)2 - 81 1.1 x=0

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Question
Asked 6/17/2014 5:04:36 AM
Updated 6/18/2014 9:07:30 AM
1 Answer/Comment
This conversation has been flagged as incorrect.
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x+3y=18 multiple 2 on both sides:
2x + 6y = 36 (equation 1)
2x+y=11 (equation 2)
equation 1 - equation 2 the result is:
5y = 25
y = 5
x + 3(5) = 18
x = 18 - 15 = 3
The solution for the system x+3y=18 2x+y=11 is (3, 5)
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Added 6/18/2014 9:07:27 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/18/2014 9:11:20 AM]
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Questions asked by the same visitor
-2x + 3y = 8 3x - y = -5
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Question
Updated 6/18/2014 9:10:25 AM
1 Answer/Comment
-2x + 3y = 8 (equation 1)
3x - y = -5 multiple 3 on both sides:
9x - 3y = -15 (equation 2)
adding up equation 1 and 2 the result is:
7x = -7
x = -7/7 = -1
3(-1) - y = -5
-y = -5 + 3 = -2
y = 2
The solution for the system -2x + 3y = 8 3x - y = -5 is (-1, 2)
Added 6/18/2014 9:10:25 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [6/18/2014 9:23:24 AM]
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