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Mathematics, 14.09.2020 05:01 kkbrookly7496

3x+2y+2z=3
x+2y-+z=5
2x-4y+z=0

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Answers: 3

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Answer from: joannegrace869

3x + 2y + 2z = 3 ⇒ 3x + 2y + 2z = 3
1x + 2y - 1z = 5 ⇒ 1x + 2y - 1z = 5
2x - 4y + 1z = 0 4x + 4y + 1z = 8
   4x + 4y + 1z = 8 ⇒ 12x + 12y + 3z = 24
3x + 2y + 2z = 3    3x - 2y = 5 ⇒ 12x - 8y    = 20
1x + 2y - 1z = 5 ⇒ 1x + 2y - 1z = 5     20y + 3z = 4
2x - 4y + 1z = 0 ⇒ 2x - 4y + 1z = 0    20y - 20y + 3z = 4 - 20y
      3x - 2y = 5    3z = 4 - 20y
      3    3
      z = 1¹/₃ - 6²/₃y
         20y + 3(1¹/₃ - 6²/₃y) = 4
      20y + 4 - 20y = 4
      20y - 20y + 4 = 4
   0y + 4 = 4
       - 4 - 4
   0y = 0
      0    0
      y = 0
      20(0) + 3z = 4
      0 + 3z = 4
      3z = 4
   3 3
z = 1¹/₃
      4x + 4(0) + 1¹/₃ = 8
      4x + 0 + 1¹/₃ = 8
      4x + 1¹/₃ = 8
      - 1¹/₃ - 1¹/₃
    4x = 6²/₃      4    4
      x = 1²/₃

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Answer from: Quest

answer: yes i agree that you should not put it on/p>

step-by-step explanation: the reason for this is that it wastes other peoples time and also make them fail as well and that is never good.

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Answer from: Quest

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did not satisfy the given simplify expression.

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3x+2y+2z=3
x+2y-+z=5
2x-4y+z=0...

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