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Simplifying r + 30 = 17 Reorder the terms: 30 + r = 17 Solving 30 + r = 17 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + r = 17 + -30 Combine like terms: 30 + -30 = 0 0 + r = 17 + -30 r = 17 + -30 Combine like terms: 17 + -30 = -13 r = -13 Simplifying r = -13
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