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18 January, 16:23

What number is the substitution of 4 (3x+9) and 5x+8

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  1. 18 January, 16:45
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    -4

    Step-by-step explanation:

    If the question is for which x the equations 4 (3x+9) and 5x+8 produce the same answer, the answer is x=-4

    4 (3x+9) = 5x+8

    12x + 36 - 5x - 8 = 0

    7x = - 28

    x = - 4
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