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Simplifying -19 = -1 + 2r Solving -19 = -1 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. -19 + -2r = -1 + 2r + -2r Combine like terms: 2r + -2r = 0 -19 + -2r = -1 + 0 -19 + -2r = -1 Add '19' to each side of the equation. -19 + 19 + -2r = -1 + 19 Combine like terms: -19 + 19 = 0 0 + -2r = -1 + 19 -2r = -1 + 19 Combine like terms: -1 + 19 = 18 -2r = 18 Divide each side by '-2'. r = -9 Simplifying r = -9
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