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Simplifying -8 = 2(4r + 8) Reorder the terms: -8 = 2(8 + 4r) -8 = (8 * 2 + 4r * 2) -8 = (16 + 8r) Solving -8 = 16 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -8 + -8r = 16 + 8r + -8r Combine like terms: 8r + -8r = 0 -8 + -8r = 16 + 0 -8 + -8r = 16 Add '8' to each side of the equation. -8 + 8 + -8r = 16 + 8 Combine like terms: -8 + 8 = 0 0 + -8r = 16 + 8 -8r = 16 + 8 Combine like terms: 16 + 8 = 24 -8r = 24 Divide each side by '-8'. r = -3 Simplifying r = -3
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