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Simplifying r + -7.9 = 7.1 Reorder the terms: -7.9 + r = 7.1 Solving -7.9 + r = 7.1 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '7.9' to each side of the equation. -7.9 + 7.9 + r = 7.1 + 7.9 Combine like terms: -7.9 + 7.9 = 0.0 0.0 + r = 7.1 + 7.9 r = 7.1 + 7.9 Combine like terms: 7.1 + 7.9 = 15 r = 15 Simplifying r = 15
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