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Simplifying -2(1 + -6r) = -2 + 4r (1 * -2 + -6r * -2) = -2 + 4r (-2 + 12r) = -2 + 4r Add '2' to each side of the equation. -2 + 2 + 12r = -2 + 2 + 4r Combine like terms: -2 + 2 = 0 0 + 12r = -2 + 2 + 4r 12r = -2 + 2 + 4r Combine like terms: -2 + 2 = 0 12r = 0 + 4r 12r = 4r Solving 12r = 4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4r' to each side of the equation. 12r + -4r = 4r + -4r Combine like terms: 12r + -4r = 8r 8r = 4r + -4r Combine like terms: 4r + -4r = 0 8r = 0 Divide each side by '8'. r = 0 Simplifying r = 0
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