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2 September, 19:24

3x + 2y = 2

-2x + y = 8

Solve the system of equations.

A) (-2,4)

B) (4,-2)

C) (-4,-2)

D) (

5

4

, -

1

2

)

+4
Answers (1)
  1. 2 September, 19:41
    0
    3x + 2y = 2, - 2x + y = 8

    Let us just solve by testing each of the options.

    Option A is (-2, 4), that is x = - 2 and y = 4

    check: for x = - 2 and y = 4

    3x + 2y = 2

    3*-2 + 2*4

    -6 + 8 = 2

    2 = 2

    So both sides are equal.

    -2x + y = 8 x = - 2 and y = 4

    -2*-2 + 4

    4 + 4

    8

    8 = 8

    Since option A (-2, 4) satisfies both equation, no need to test other options.

    Option A is the answer.
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