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6-7.
  1. Solve each equation for the indicated variable. Homework Help ✎

    1. 3x − 2y = 18 for x

    2. 3x − 2y = 18 for y

    3. C = 2πr for r

Add 2y to both sides.
3x = 18 + 2y

Divide both sides by 3.

See part (a).

Divide both sides by 2π.