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Simplifying 40 + 7.50r = 12.50r Solving 40 + 7.50r = 12.50r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12.50r' to each side of the equation. 40 + 7.50r + -12.50r = 12.50r + -12.50r Combine like terms: 7.50r + -12.50r = -5r 40 + -5r = 12.50r + -12.50r Combine like terms: 12.50r + -12.50r = 0.00 40 + -5r = 0.00 Add '-40' to each side of the equation. 40 + -40 + -5r = 0.00 + -40 Combine like terms: 40 + -40 = 0 0 + -5r = 0.00 + -40 -5r = 0.00 + -40 Combine like terms: 0.00 + -40 = -40 -5r = -40 Divide each side by '-5'. r = 8 Simplifying r = 8
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