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17 December, 19:48

1.)

{5x+y=2

4x+y=4

Use the linear combination method.

A. (0, 2)

B. (-2, 12)

C. (-3, 17)

D. (1, - 8)

2.)

Solve.

{2d-e=7

d+e=5

Use the linear combination method.

A. There are infinitely many solutions.

B. There is no solution.

C. The solution is (4, 1).

D. The solution is (3, - 1).

3.)

What is the solution of the system?

5x-y=-21

x+y=-3

4.)

What is the solution of the system?

-3x+9y=36

4x+12y=24

5.)

What is the solution of the system of equations?

7/2x-1/2y=9/2

3x-y=5

+5
Answers (2)
  1. 17 December, 19:54
    0
    1.

    B. (-2, 12)

    2.

    B. There is no solution.

    3.

    (-4, 1)

    4.

    (-3, 3)

    5.

    (1, - 2)
  2. 17 December, 20:03
    0
    The answer to Q2 should be C
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