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Simplifying 16 = -4(2 + 2r) 16 = (2 * -4 + 2r * -4) 16 = (-8 + -8r) Solving 16 = -8 + -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. 16 + 8r = -8 + -8r + 8r Combine like terms: -8r + 8r = 0 16 + 8r = -8 + 0 16 + 8r = -8 Add '-16' to each side of the equation. 16 + -16 + 8r = -8 + -16 Combine like terms: 16 + -16 = 0 0 + 8r = -8 + -16 8r = -8 + -16 Combine like terms: -8 + -16 = -24 8r = -24 Divide each side by '8'. r = -3 Simplifying r = -3
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