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15 February, 13:16

How do you do this equation - 12 - a = 4a - 7

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Answers (2)
  1. 15 February, 15:26
    0
    -a=4a+5 move the - 12 to the right

    -5a=5 mover the - 4a to the left

    a=-1 divide - 5 by both sides
  2. 15 February, 16:02
    0
    A=-1

    -a-12-4a=4a-7-4a

    -5a-12=-7

    -5a-12+12=-7+12

    -5a=5

    Divide both by - 5

    A = - 1
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