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Simplifying 3r + -23 = -9 + r Reorder the terms: -23 + 3r = -9 + r Solving -23 + 3r = -9 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. -23 + 3r + -1r = -9 + r + -1r Combine like terms: 3r + -1r = 2r -23 + 2r = -9 + r + -1r Combine like terms: r + -1r = 0 -23 + 2r = -9 + 0 -23 + 2r = -9 Add '23' to each side of the equation. -23 + 23 + 2r = -9 + 23 Combine like terms: -23 + 23 = 0 0 + 2r = -9 + 23 2r = -9 + 23 Combine like terms: -9 + 23 = 14 2r = 14 Divide each side by '2'. r = 7 Simplifying r = 7
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