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Simplifying 8 + 3(3r + -3) = 0 Reorder the terms: 8 + 3(-3 + 3r) = 0 8 + (-3 * 3 + 3r * 3) = 0 8 + (-9 + 9r) = 0 Combine like terms: 8 + -9 = -1 -1 + 9r = 0 Solving -1 + 9r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 9r = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 9r = 0 + 1 9r = 0 + 1 Combine like terms: 0 + 1 = 1 9r = 1 Divide each side by '9'. r = 0.1111111111 Simplifying r = 0.1111111111
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