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27 March, 20:34

Solve the equation

a+3 = (2a+7) / r

after that take r=9

+3
Answers (1)
  1. 27 March, 20:48
    0
    Let r = 9 and solve for a.

    a + 3 = (2a + 7) / r

    a + 3 = (2a + 7) / 9

    9 (a + 3) = 2a + 7

    9a + 27 = 2a + 7

    9a - 2a = 7 - 27

    7a = - 20

    a = - 20/7

    I believe this is what you seek.
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