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Simplifying -2(4 + 6r) = 0 (4 * -2 + 6r * -2) = 0 (-8 + -12r) = 0 Solving -8 + -12r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -12r = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -12r = 0 + 8 -12r = 0 + 8 Combine like terms: 0 + 8 = 8 -12r = 8 Divide each side by '-12'. r = -0.6666666667 Simplifying r = -0.6666666667
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