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March 25, 2017

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Use the Substitution method to solve the system of equations.

x + y = -4
x - y = 2


x + y = -4
x - y = 2

In the second equation,
x= y+2 Putting that in the first..
(y+2) + y= -4
subtract two from each side, then divide each side by two to get y. Then, put that value of y into EITHER of the equations and solve for x. I will be happy to critique your thinking or work.

  • Substitution Method - ,

    x 4y=5
    2x+8y=15

  • Substitution Method - ,

    x + y = 4
    2x - 3y = -2

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