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Simplifying 11 + r = 4(2r + 3) + -1 Reorder the terms: 11 + r = 4(3 + 2r) + -1 11 + r = (3 * 4 + 2r * 4) + -1 11 + r = (12 + 8r) + -1 Reorder the terms: 11 + r = 12 + -1 + 8r Combine like terms: 12 + -1 = 11 11 + r = 11 + 8r Add '-11' to each side of the equation. 11 + -11 + r = 11 + -11 + 8r Combine like terms: 11 + -11 = 0 0 + r = 11 + -11 + 8r r = 11 + -11 + 8r Combine like terms: 11 + -11 = 0 r = 0 + 8r r = 8r Solving r = 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. r + -8r = 8r + -8r Combine like terms: r + -8r = -7r -7r = 8r + -8r Combine like terms: 8r + -8r = 0 -7r = 0 Divide each side by '-7'. r = 0 Simplifying r = 0
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