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Simplifying 5 + -8r + -7 + -3r = 0 Reorder the terms: 5 + -7 + -8r + -3r = 0 Combine like terms: 5 + -7 = -2 -2 + -8r + -3r = 0 Combine like terms: -8r + -3r = -11r -2 + -11r = 0 Solving -2 + -11r = 0 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 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -11r = 0 + 2 -11r = 0 + 2 Combine like terms: 0 + 2 = 2 -11r = 2 Divide each side by '-11'. r = -0.1818181818 Simplifying r = -0.1818181818
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