luticiawright luticiawright

13-02-2017
Mathematics

contestada

Solve the system by the elimination method.
x + y - 6 = 0
x - y - 8 = 0

Respuesta :

mollymollmoo99 mollymollmoo99

13-02-2017

x+y=6 --> Equation 1
x-y=8 --> Equation 2
Equation 1 - Equation 2 =
2y =-2
y = -1

x+y = 6 --> Plug y value into equation
x + (-1) = 6
x-1 = 6
x = 7

y = -1, x = 7

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