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14 December, 20:22

If f (x) = x - 2 and g (x) = - 2x + 7, what value of x makes f (x) = g (x) ?

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  1. 14 December, 20:48
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    Answer: The value of 3 for x will make f (x) = g (x)

    Step-by-step explanation:

    Make them equal each other and solve for x.

    x-2 = - 2x + 7 Add 2x to both sides

    +2x + 2x

    3x - 2 = 7

    +2 + 2

    3x = 9

    x = 3

    Check.

    F (3) = 3-2

    f (3) = 1

    g (3) = - 2 (3) + 7

    g (3) = - 6 + 7

    g (3) = 1
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