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4 December, 18:36

Use the substitution method to solve the system of equation. choose the correct ordered pair. 3x - y=3 y=2x + 2 A. (2,6) B. (5,12) C. (4,10) D. (3,8)

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  1. 4 December, 18:53
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    B: (5, 12)

    Step-by-step explanation:

    Find the solution of the following system of linear equations:

    3x - y=3

    y=2x + 2

    Note that the 2nd equation has already been solved for y. Thus, subbing 2x + 2 for y in the 1st equation is the way to go:

    3x - (2x + 2) = 3.

    Simplifying, 3x - 2x - 2 = 3, and so x = 3 + 2 = 5.

    Subbing 5 for x in the 2nd equation yields y = 2 (5) + 2, or y = 12.

    The solution is B: (5, 12)
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