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5 April, 16:21

Which system of equations is equivalent to the following system?

4x + y = 4

2x + 7y = 28

(A) 4x + y = 4

-2x - 7y = 28

(B) 4x + y = 4

-8x - 28y = 112

(C) - 28x - 7y = - 28

2x + 7y = 28

(D) - 8x - 2y = 8

2x + 7y = 28

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Answers (2)
  1. 5 April, 16:32
    0
    Simultaneous equations is the method used to calculate x and y.
  2. 5 April, 17:50
    0
    C.

    Step-by-step explanation:

    Its C because the second of the equations are the same and the first equation in set C is 4x + y = 4 multiplied by - 7.
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