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Simplifying -3(r + 12) = -58 Reorder the terms: -3(12 + r) = -58 (12 * -3 + r * -3) = -58 (-36 + -3r) = -58 Solving -36 + -3r = -58 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + -3r = -58 + 36 Combine like terms: -36 + 36 = 0 0 + -3r = -58 + 36 -3r = -58 + 36 Combine like terms: -58 + 36 = -22 -3r = -22 Divide each side by '-3'. r = 7.333333333 Simplifying r = 7.333333333
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