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Simplifying -3r + 4(r + 2) = 11 Reorder the terms: -3r + 4(2 + r) = 11 -3r + (2 * 4 + r * 4) = 11 -3r + (8 + 4r) = 11 Reorder the terms: 8 + -3r + 4r = 11 Combine like terms: -3r + 4r = 1r 8 + 1r = 11 Solving 8 + 1r = 11 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 1r = 11 + -8 Combine like terms: 8 + -8 = 0 0 + 1r = 11 + -8 1r = 11 + -8 Combine like terms: 11 + -8 = 3 1r = 3 Divide each side by '1'. r = 3 Simplifying r = 3
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