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26 June, 18:10

Solve for (x, y, z)

x = 6z + 13 - 4x

- 6y - 4z = 32

6x + y - 7z = - 9

+2
Answers (1)
  1. 26 June, 19:49
    0
    1. x=6z+13/5

    2. y = - 2z-16/3

    3. z = 6x/7+y/7+9/7

    Explanations

    1 Add 4x to both sides

    5x=6z+13

    Divide 5 by both sides

    x=6z+13/5

    2 Add 4z to both sides

    -6y=32+4z

    Divide 6 by both sides

    -6y/-6 = 32/-6 + 4z/-6

    Simplify

    y=-2 (z+8) / 3 of y = - 2z-16/3

    3. Subtract 6x+y from both sides

    -7z=-9-6x-y

    Divide 7 by both sides

    -7z/-7 = - 9/-7 - 6x/-7 - y/-7

    Simplify

    z=6x/7+y/7+9/7
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