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Simplifying R + 8.2 + 0.4r = -86 Reorder the terms: 8.2 + R + 0.4r = -86 Solving 8.2 + R + 0.4r = -86 Solving for variable 'R'. Move all terms containing R to the left, all other terms to the right. Add '-8.2' to each side of the equation. 8.2 + R + -8.2 + 0.4r = -86 + -8.2 Reorder the terms: 8.2 + -8.2 + R + 0.4r = -86 + -8.2 Combine like terms: 8.2 + -8.2 = 0.0 0.0 + R + 0.4r = -86 + -8.2 R + 0.4r = -86 + -8.2 Combine like terms: -86 + -8.2 = -94.2 R + 0.4r = -94.2 Add '-0.4r' to each side of the equation. R + 0.4r + -0.4r = -94.2 + -0.4r Combine like terms: 0.4r + -0.4r = 0.0 R + 0.0 = -94.2 + -0.4r R = -94.2 + -0.4r Simplifying R = -94.2 + -0.4r
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