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Simplifying -5r + -8(r + 2) = -107 Reorder the terms: -5r + -8(2 + r) = -107 -5r + (2 * -8 + r * -8) = -107 -5r + (-16 + -8r) = -107 Reorder the terms: -16 + -5r + -8r = -107 Combine like terms: -5r + -8r = -13r -16 + -13r = -107 Solving -16 + -13r = -107 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + -13r = -107 + 16 Combine like terms: -16 + 16 = 0 0 + -13r = -107 + 16 -13r = -107 + 16 Combine like terms: -107 + 16 = -91 -13r = -91 Divide each side by '-13'. r = 7 Simplifying r = 7
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