anonymous
  • anonymous
3x+9y=-7
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
solve the equation andwrite a reason for each step
anonymous
  • anonymous
you have two variables are you supposed to solve for \(y\)?
anonymous
  • anonymous
imma going to give an example first

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anonymous
  • anonymous
|dw:1442540307065:dw|
anonymous
  • anonymous
yeah ok but your example is finding a number for x your question has two variables in it
anonymous
  • anonymous
you can do both
anonymous
  • anonymous
x and y
texaschic101
  • texaschic101
3x + 9y = -7 ......solving for x....subtract 9y from both sides 3x = -9y - 7....now we would divide both sides by 3 x = (-9y - 7) / 3 or x = -3y - 7/3 3x + 9y = -7 ....solving for y....subtract 3x from both sides 9y = -3x - 7 ....now we will divide both sides by 9 y = (-3x - 7) / 9 or y = -1/3x - 7/9

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