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28 May, 05:55

Simplify 3 (2x+5) - 4 (2x-7)

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  1. 28 May, 08:54
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    For this you need to expand the brackets first:

    3 (2x+5) - 4 (2x-7) = 6x+15-8x-28

    And then now you need to add and simplify:

    6x+15-8x-28 - > 6x-8x = - 2x

    15-28 = - 13

    So that leaves

    -2x - 13
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