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Simplifying -19r + 13 = -18r Reorder the terms: 13 + -19r = -18r Solving 13 + -19r = -18r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '18r' to each side of the equation. 13 + -19r + 18r = -18r + 18r Combine like terms: -19r + 18r = -1r 13 + -1r = -18r + 18r Combine like terms: -18r + 18r = 0 13 + -1r = 0 Add '-13' to each side of the equation. 13 + -13 + -1r = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1r = 0 + -13 -1r = 0 + -13 Combine like terms: 0 + -13 = -13 -1r = -13 Divide each side by '-1'. r = 13 Simplifying r = 13
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