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Simplifying -2r + -8r + -8 = 0 Reorder the terms: -8 + -2r + -8r = 0 Combine like terms: -2r + -8r = -10r -8 + -10r = 0 Solving -8 + -10r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -10r = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -10r = 0 + 8 -10r = 0 + 8 Combine like terms: 0 + 8 = 8 -10r = 8 Divide each side by '-10'. r = -0.8 Simplifying r = -0.8
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