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Simplifying -6(-6r + 2) = -40 + 8r Reorder the terms: -6(2 + -6r) = -40 + 8r (2 * -6 + -6r * -6) = -40 + 8r (-12 + 36r) = -40 + 8r Solving -12 + 36r = -40 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -12 + 36r + -8r = -40 + 8r + -8r Combine like terms: 36r + -8r = 28r -12 + 28r = -40 + 8r + -8r Combine like terms: 8r + -8r = 0 -12 + 28r = -40 + 0 -12 + 28r = -40 Add '12' to each side of the equation. -12 + 12 + 28r = -40 + 12 Combine like terms: -12 + 12 = 0 0 + 28r = -40 + 12 28r = -40 + 12 Combine like terms: -40 + 12 = -28 28r = -28 Divide each side by '28'. r = -1 Simplifying r = -1
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