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Simplifying 6.5 = 2.5r + -12 Reorder the terms: 6.5 = -12 + 2.5r Solving 6.5 = -12 + 2.5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2.5r' to each side of the equation. 6.5 + -2.5r = -12 + 2.5r + -2.5r Combine like terms: 2.5r + -2.5r = 0.0 6.5 + -2.5r = -12 + 0.0 6.5 + -2.5r = -12 Add '-6.5' to each side of the equation. 6.5 + -6.5 + -2.5r = -12 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + -2.5r = -12 + -6.5 -2.5r = -12 + -6.5 Combine like terms: -12 + -6.5 = -18.5 -2.5r = -18.5 Divide each side by '-2.5'. r = 7.4 Simplifying r = 7.4
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