panocha900 panocha900
  • 01-06-2022
  • Mathematics
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Solve system of equation using elimination by addition.

Will give brainliest!!

Solve system of equation using elimination by addition Will give brainliest class=

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notleoprobably
notleoprobably notleoprobably
  • 01-06-2022

Answer:

[tex]x = 2, y = -1[/tex]

Step-by-step explanation:

We can add the 2 equations together to solve for y.

[tex](-3x + 5y) + (3x + 7y) = (-11) + (-1)\\-3x + 3x + 5y + 7y = -11 -1\\12y = -12\\y = -1[/tex]

Now we can solve for x by substituting y in one of the original equations.

[tex]3x + 7y = -1\\3x + 7(-1) = -1\\3x - 7 = -1\\3x = 6\\x = 2[/tex]

Those are the answers

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