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Simplifying -16.9 = -2(r + -9.98) Reorder the terms: -16.9 = -2(-9.98 + r) -16.9 = (-9.98 * -2 + r * -2) -16.9 = (19.96 + -2r) Solving -16.9 = 19.96 + -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. -16.9 + 2r = 19.96 + -2r + 2r Combine like terms: -2r + 2r = 0 -16.9 + 2r = 19.96 + 0 -16.9 + 2r = 19.96 Add '16.9' to each side of the equation. -16.9 + 16.9 + 2r = 19.96 + 16.9 Combine like terms: -16.9 + 16.9 = 0.0 0.0 + 2r = 19.96 + 16.9 2r = 19.96 + 16.9 Combine like terms: 19.96 + 16.9 = 36.86 2r = 36.86 Divide each side by '2'. r = 18.43 Simplifying r = 18.43
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