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Simplifying 145.50 = 45 + 3r Solving 145.50 = 45 + 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. 145.50 + -3r = 45 + 3r + -3r Combine like terms: 3r + -3r = 0 145.50 + -3r = 45 + 0 145.50 + -3r = 45 Add '-145.50' to each side of the equation. 145.50 + -145.50 + -3r = 45 + -145.50 Combine like terms: 145.50 + -145.50 = 0.00 0.00 + -3r = 45 + -145.50 -3r = 45 + -145.50 Combine like terms: 45 + -145.50 = -100.5 -3r = -100.5 Divide each side by '-3'. r = 33.5 Simplifying r = 33.5
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