lilred5
lilred5 lilred5
  • 22-06-2017
  • Mathematics
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Can someone help me with question2

Can someone help me with question2 class=

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MathG33k
MathG33k MathG33k
  • 22-06-2017
We  can manipulate both equations in order to make them in terms of y, and then substitute it in.
[tex]y+3x=-5 \\4x+2y=-8 \\Manipulate \ the \ first \ one \\ 3x = -y-5 \\ x = \frac{-y}{3}-\frac{5}{3} \\ Substitute \\ 4(\frac{-y}{3}-\frac{5}{3}) + 2y = -8 \\ Manipulate \ the \ second \ equation \\ 4x = -2y-8 \\ x = \frac{-2y}{4}-2 \\ x = \frac{-y}{2}-2 \\ Substitute \\ y+2(\frac{-y}{2}-2)=-5[/tex]
The answers are answer choice A and D
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