Could you explain to me how to solve this problem?

  • Thread starter Thread starter NaTasha
  • Start date Start date
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NaTasha

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I'm a little confused by this system:
y = x - 4
y = 2x
It says I have to solve by substitution, but every time I try to change the equations, it comes out wrong. If you could explain a few steps for me, that could be great? Pretty please? =)
 
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