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Simplifying -2(2r + 7) + -2(4r + -2) + -6r = 0 Reorder the terms: -2(7 + 2r) + -2(4r + -2) + -6r = 0 (7 * -2 + 2r * -2) + -2(4r + -2) + -6r = 0 (-14 + -4r) + -2(4r + -2) + -6r = 0 Reorder the terms: -14 + -4r + -2(-2 + 4r) + -6r = 0 -14 + -4r + (-2 * -2 + 4r * -2) + -6r = 0 -14 + -4r + (4 + -8r) + -6r = 0 Reorder the terms: -14 + 4 + -4r + -8r + -6r = 0 Combine like terms: -14 + 4 = -10 -10 + -4r + -8r + -6r = 0 Combine like terms: -4r + -8r = -12r -10 + -12r + -6r = 0 Combine like terms: -12r + -6r = -18r -10 + -18r = 0 Solving -10 + -18r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -18r = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -18r = 0 + 10 -18r = 0 + 10 Combine like terms: 0 + 10 = 10 -18r = 10 Divide each side by '-18'. r = -0.5555555556 Simplifying r = -0.5555555556
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