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15 October, 07:54

Are the equations sometimes, always, or never true?

a. 15 + 2x - 4 = 9x + 11 - 7x

b. 2x + 3 (4x - 1) = 2 (5x + 3) + 4x

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  1. 15 October, 09:20
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    15 + 2x - 4 = 9x + 11 - 7x

    2x + 11 = 2x + 11

    always true

    2x + 3 (4x - 1) = 2 (5x + 3) + 4x

    2x + 12x - 3 = 10x + 6 + 4x

    14x - 3 = 14x + 6

    never true
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