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anonymous

  • one year ago

what is the solution of this linear system 3x+y=-2 y=-x+4

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  1. marihelenh
    • one year ago
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    Put what y is equal to back into the first equation, so \[3x+(-x+4)=-2\]

  2. marihelenh
    • one year ago
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    Combine like terms first. \[3x-x+4=-2\] \[2x+4=-2\] Then you can subtract the 4 from both sides to get x on one side. \[2x=-6\] To finish, just divide both sides by 2 to find what x is equal to.

  3. marihelenh
    • one year ago
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    \[x=-3\]

  4. anonymous
    • one year ago
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    got it thanks

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