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31 May, 09:02

7a + (4+5a) = 12a+4

use properties and justify each step

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  1. 31 May, 09:09
    0
    7a + (4+5a) = 12a+4

    The first step to this is to simplify both sides of the equation.

    You have to combine all of the like terms first ...

    (7x + 5x) + (4) = 12x + 4

    12x + 4 = 12x + 4

    Now the second step is to subtract 12x from both sides ...

    12x + 4 = 12x + 4

    -12x - 12x

    4 = 4

    Now you will subtract four from both sides and get ...

    0=0
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