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Simplifying 15r + 15 = 2.25r Reorder the terms: 15 + 15r = 2.25r Solving 15 + 15r = 2.25r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2.25r' to each side of the equation. 15 + 15r + -2.25r = 2.25r + -2.25r Combine like terms: 15r + -2.25r = 12.75r 15 + 12.75r = 2.25r + -2.25r Combine like terms: 2.25r + -2.25r = 0.00 15 + 12.75r = 0.00 Add '-15' to each side of the equation. 15 + -15 + 12.75r = 0.00 + -15 Combine like terms: 15 + -15 = 0 0 + 12.75r = 0.00 + -15 12.75r = 0.00 + -15 Combine like terms: 0.00 + -15 = -15 12.75r = -15 Divide each side by '12.75'. r = -1.176470588 Simplifying r = -1.176470588
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