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Simplifying -156 = 6(-3r + -2) Reorder the terms: -156 = 6(-2 + -3r) -156 = (-2 * 6 + -3r * 6) -156 = (-12 + -18r) Solving -156 = -12 + -18r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '18r' to each side of the equation. -156 + 18r = -12 + -18r + 18r Combine like terms: -18r + 18r = 0 -156 + 18r = -12 + 0 -156 + 18r = -12 Add '156' to each side of the equation. -156 + 156 + 18r = -12 + 156 Combine like terms: -156 + 156 = 0 0 + 18r = -12 + 156 18r = -12 + 156 Combine like terms: -12 + 156 = 144 18r = 144 Divide each side by '18'. r = 8 Simplifying r = 8
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