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Simplifying -3 + -2(8r + 5) = 0 Reorder the terms: -3 + -2(5 + 8r) = 0 -3 + (5 * -2 + 8r * -2) = 0 -3 + (-10 + -16r) = 0 Combine like terms: -3 + -10 = -13 -13 + -16r = 0 Solving -13 + -16r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -16r = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -16r = 0 + 13 -16r = 0 + 13 Combine like terms: 0 + 13 = 13 -16r = 13 Divide each side by '-16'. r = -0.8125 Simplifying r = -0.8125
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