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25 August, 01:26

How do you solve algebra special systems

solve each system of linear equations.

y equals negative x minus 3

x plus y equals 4

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Answers (1)
  1. 25 August, 01:40
    0
    Y=-X-3

    X+Y=4

    You'll want to get X or Y by itself, which in this question it already is.

    After that, use substitution (Plug - X-3 in place of Y in X+Y=4)

    Equation should look like X + (-X-3) = 4

    Solve that equation

    X + (-X-3) = 4

    X + (-X) cancels eachother out, leaving you with (-3) = 4

    Add 3 to both sides of (-3) = 4, leaving you with 0=7

    0 Can't equal 7, so this equation has no solutions
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