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  • 07-12-2016
  • Mathematics
Answered

Solve the system of equation

Solve the system of equation class=

Verified Answer :

WY1219
WY1219 WY1219
  • 08-12-2016
  1. Combine the first and second equation, we get 2x+3z=-13

    2. Combine the second and third equation, we get 3x+3z=-15

    3. Multiply 2x+3z=-13 by -3 and 3x+3z=-15 by 2.

    4. -6x-9z=39 and 6x+6z=-30

    5. Combine them together.
    -3z=9 z=-3

    6. Plug-in the value back to our equation.

    2x+3(-3)=-13
    2x-9=-13
    2x=-4
    x=-2

    X+y+z=-3
    -2+y+-3=-3
    y=2
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