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Simplifying -3(1 + 4.5r) = -17.5 (1 * -3 + 4.5r * -3) = -17.5 (-3 + -13.5r) = -17.5 Solving -3 + -13.5r = -17.5 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -13.5r = -17.5 + 3 Combine like terms: -3 + 3 = 0 0 + -13.5r = -17.5 + 3 -13.5r = -17.5 + 3 Combine like terms: -17.5 + 3 = -14.5 -13.5r = -14.5 Divide each side by '-13.5'. r = 1.074074074 Simplifying r = 1.074074074
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