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