anonymous
  • anonymous
What is the solution of the system of equations 2x − 5y = 11 and −2x + 3y = −9? (1) (−3,−1) (3) (3,−1) (2) (−1,3) (4) (3,1)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Show Work Please!!!
anonymous
  • anonymous
were gonna do this together okay, real simple, first, we should add the first equation to the second equation okay: 2x − 5y = 11 −2x + 3y = −9 + --------------------- What do you get?
anonymous
  • anonymous
-4x8y-2

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anonymous
  • anonymous
?
anonymous
  • anonymous
really? just look at this we have to add it like we would normally, it dosent matter if there are x and y's (2x)+(-2x)=0
anonymous
  • anonymous
Fine I got the first step
anonymous
  • anonymous
2x − 5y = 11 −2x + 3y = −9 + --------------------- -2y=2
anonymous
  • anonymous
now can you find what y=?
anonymous
  • anonymous
y = -1,3
anonymous
  • anonymous
?
anonymous
  • anonymous
what? how did you get y=-1,3, from -2y=2, you have to solve for y
anonymous
  • anonymous
I don't know how to solve for Y
anonymous
  • anonymous
if you have -2y=2, you dont know how to get y by ?itself
anonymous
  • anonymous
Nope
anonymous
  • anonymous
okay if i have -2y=2, then what should be done is divide both sidezs by -2, that gives us y=-1
anonymous
  • anonymous
now, simply replace y=-1 into one of your orginal equation and get x
anonymous
  • anonymous
What will be my final answer?
anonymous
  • anonymous
?
anonymous
  • anonymous
you have to solve this :2x − 5(-1) = 11
anonymous
  • anonymous
Thanks for everything but I rather get the answer
anonymous
  • anonymous
yeah, your gonna get far
anonymous
  • anonymous
Thank You Sir.

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