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Simplifying r + 2(5r + -1) = -134 Reorder the terms: r + 2(-1 + 5r) = -134 r + (-1 * 2 + 5r * 2) = -134 r + (-2 + 10r) = -134 Reorder the terms: -2 + r + 10r = -134 Combine like terms: r + 10r = 11r -2 + 11r = -134 Solving -2 + 11r = -134 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 11r = -134 + 2 Combine like terms: -2 + 2 = 0 0 + 11r = -134 + 2 11r = -134 + 2 Combine like terms: -134 + 2 = -132 11r = -132 Divide each side by '11'. r = -12 Simplifying r = -12
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