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Simplifying -8(2 + 4r) = -16 + -2r (2 * -8 + 4r * -8) = -16 + -2r (-16 + -32r) = -16 + -2r Add '16' to each side of the equation. -16 + 16 + -32r = -16 + 16 + -2r Combine like terms: -16 + 16 = 0 0 + -32r = -16 + 16 + -2r -32r = -16 + 16 + -2r Combine like terms: -16 + 16 = 0 -32r = 0 + -2r -32r = -2r Solving -32r = -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. -32r + 2r = -2r + 2r Combine like terms: -32r + 2r = -30r -30r = -2r + 2r Combine like terms: -2r + 2r = 0 -30r = 0 Divide each side by '-30'. r = 0.0 Simplifying r = 0.0
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