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1 September, 20:59

1.4 solving two step and multiple-step equations 2r+20=200

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Answers (2)
  1. 1 September, 21:03
    0
    Steps for solving:

    Start by isolating 2r by subtracting 20 from both sides.

    This leaves us with 2r = 180.

    Now divide both sides by 2 and r = 90.
  2. 1 September, 21:18
    0
    r = 90

    Step-by-step explanation:

    Our goal is always to get the variable we're trying to solve for on one side of the =, and everything else on the other side. Since we are solving for r here, we want to get rid of the 20 first, and then the 2.

    subtract 20 from both sides:

    2r = 200 - 20 = 180

    divide both sides by 2:

    r = 180 / 2 = 90
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