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Simplifying 19 + -1r = 81 Solving 19 + -1r = 81 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + -1r = 81 + -19 Combine like terms: 19 + -19 = 0 0 + -1r = 81 + -19 -1r = 81 + -19 Combine like terms: 81 + -19 = 62 -1r = 62 Divide each side by '-1'. r = -62 Simplifying r = -62
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