yamadoo74
contestada

Which of the following system of equations is not equal to the system of equations shown
7x - 3y = 4
2x - 4y = 1

A. 28x - 12y = 16 and -6x + 12y = -3
B. 14x - 6y = 4 and -14x + 28y = 1
C. -28x + 12y = -16 and 28x - 56y = 14

Respuesta :

texaschic101

Answer:

B

Step-by-step explanation:

7x - 3y = 4

2x - 4y = 1

==============

A. if u take 7x - 3y = 4....and multiply it by 4, u get 28x - 12y = 16

   if u take 2x - 4y = 1...and multiply it by -3, u get -6x + 12y = -3

  These are equivalent equations

B. if u take 7x - 3y = 4...multiply it by 2, u get 14x - 6y = 8

  not equivalent

C. if u take 7x - 3y = 4, multiply it by -4, u get -28x + 12y = -16

  if u take 2x - 4y = 1, multiply it by 14, u get 28x - 56y = 14

   equivalent equations

   

Mxrxy

Answer:

28x - 12y = 16 and -6x + 12y = -3

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