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

B

Step-by-step explanation:

7x - 3y = 4

2x - 4y = 1

A. if u take 7x - 3y = 4and 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

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3