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Simplifying 3 = 0.5r + 7 Reorder the terms: 3 = 7 + 0.5r Solving 3 = 7 + 0.5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-0.5r' to each side of the equation. 3 + -0.5r = 7 + 0.5r + -0.5r Combine like terms: 0.5r + -0.5r = 0.0 3 + -0.5r = 7 + 0.0 3 + -0.5r = 7 Add '-3' to each side of the equation. 3 + -3 + -0.5r = 7 + -3 Combine like terms: 3 + -3 = 0 0 + -0.5r = 7 + -3 -0.5r = 7 + -3 Combine like terms: 7 + -3 = 4 -0.5r = 4 Divide each side by '-0.5'. r = -8 Simplifying r = -8
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