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26 September, 11:31

7. 12a + 5-8a=-1

I do not know how to do it

+4
Answers (2)
  1. 26 September, 11:43
    0
    a=-3/2

    Step-by-step explanation:

    12a+5-8a=-1

    12a-8a+5=-1

    4a+5=-1

    4a=-1-5

    4a=-6

    a=-6/4

    simplify

    a=-3/2
  2. 26 September, 13:14
    0
    Isolate the variable by dividing each side by factors that don't contain the variable.

    Exact Form:

    a=-32

    Decimal Form:

    a=-1.5

    Mixed Number Form:

    a=-112

    Step-by-step explanation:

    you should go to math. ways they know everything
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