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Simplifying -1(7r + -1) = -205 Reorder the terms: -1(-1 + 7r) = -205 (-1 * -1 + 7r * -1) = -205 (1 + -7r) = -205 Solving 1 + -7r = -205 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -7r = -205 + -1 Combine like terms: 1 + -1 = 0 0 + -7r = -205 + -1 -7r = -205 + -1 Combine like terms: -205 + -1 = -206 -7r = -206 Divide each side by '-7'. r = 29.42857143 Simplifying r = 29.42857143
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