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Simplifying 2(4 + -2r) = -2(r + -5) (4 * 2 + -2r * 2) = -2(r + -5) (8 + -4r) = -2(r + -5) Reorder the terms: 8 + -4r = -2(-5 + r) 8 + -4r = (-5 * -2 + r * -2) 8 + -4r = (10 + -2r) Solving 8 + -4r = 10 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. 8 + -4r + 2r = 10 + -2r + 2r Combine like terms: -4r + 2r = -2r 8 + -2r = 10 + -2r + 2r Combine like terms: -2r + 2r = 0 8 + -2r = 10 + 0 8 + -2r = 10 Add '-8' to each side of the equation. 8 + -8 + -2r = 10 + -8 Combine like terms: 8 + -8 = 0 0 + -2r = 10 + -8 -2r = 10 + -8 Combine like terms: 10 + -8 = 2 -2r = 2 Divide each side by '-2'. r = -1 Simplifying r = -1
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