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17 June, 06:43

Solve the equation

33=12r-3 (9-r)

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Answers (2)
  1. 17 June, 06:58
    0
    r = 4
  2. 17 June, 07:03
    0
    r = 4

    Step-by-step explanation:

    Our goal is to let the r alone on one side of the equation.

    33 = 12r-3 (9-r)

    First, let's distribute the 3 into the parenthesis:

    33 = 12r - 3*9 - 3 * (-r)

    33 = 12r - 27 + 3r

    Now we add 27 on both sides of the equation

    33 + 27 = 12r - 27 + 3r + 27

    60 = 12r + 3r

    Now that we only have terms with r on the right side, we can sum them

    60 = 15r

    We divide by 15 on both sides

    60/15 = 15r/15

    4 = r
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