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Simplifying 8 = 0.8r Solving 8 = 0.8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-0.8r' to each side of the equation. 8 + -0.8r = 0.8r + -0.8r Combine like terms: 0.8r + -0.8r = 0.0 8 + -0.8r = 0.0 Add '-8' to each side of the equation. 8 + -8 + -0.8r = 0.0 + -8 Combine like terms: 8 + -8 = 0 0 + -0.8r = 0.0 + -8 -0.8r = 0.0 + -8 Combine like terms: 0.0 + -8 = -8 -0.8r = -8 Divide each side by '-0.8'. r = 10 Simplifying r = 10
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