anonymous
  • anonymous
[6.02] For the following system, if you isolated y in the first equation to use the Substitution Method, what expression would you substitute into the second equation? 4x − y = 8 2x + 3y = 9
Mathematics
katieb
  • katieb
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kropot72
  • kropot72
4x - y =8 The first step to isolate y is to subtract 4x from both sides of the equation. Can you do that?
kropot72
  • kropot72
@Mrszbieberxo Are you there?
anonymous
  • anonymous
yes I got infinitely many solutions

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kropot72
  • kropot72
Can you please do the step that I gave previously. 4x - y =8 The first step to isolate y is to subtract 4x from both sides of the equation. Can you do that?
anonymous
  • anonymous
y=4?
kropot72
  • kropot72
Not really. Subtracting 4x from both sides gives: 4x - y - 4x = 8 - 4x ...............(1) Can you simplify the left hand side of (1)?
anonymous
  • anonymous
I'm sorry i'm really confused :/
kropot72
  • kropot72
We are looking at simplifying the left hand side of 4x - y - 4x = 8 - 4x ...............(1) If the terms on the left hand side are rearrangedas follows is the simplification clearer? (4x - 4x) - y = 8 - 4x Hint: What is 4x - 4x ?
kropot72
  • kropot72
rearranged as*

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