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