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Simplifying 30 = -0.2r Solving 30 = -0.2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.2r' to each side of the equation. 30 + 0.2r = -0.2r + 0.2r Combine like terms: -0.2r + 0.2r = 0.0 30 + 0.2r = 0.0 Add '-30' to each side of the equation. 30 + -30 + 0.2r = 0.0 + -30 Combine like terms: 30 + -30 = 0 0 + 0.2r = 0.0 + -30 0.2r = 0.0 + -30 Combine like terms: 0.0 + -30 = -30 0.2r = -30 Divide each side by '0.2'. r = -150 Simplifying r = -150
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