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13 January, 15:23

Samuel used the distributive property to simplify the expression - 6 (-2 - 10x) - 7x and came up with 53x - 12 which is incorrect. What is Samuel's mistake? What is the correct answer?

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  1. 13 January, 17:17
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    He messed up the signs, most likely by multiplying incorrectly. It should be 53x+12.

    Step-by-step explanation:

    You begin by multiplying both - 2 and - 10x by - 6.

    Remember a negative times a negative makes a positive.

    -6 (-2-10x)

    12+60x

    Then you need to combine like terms which are 60x and - 7x

    60x-7x

    53x

    So that means the final answer will be

    53x+12
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