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Simplifying 50 + 65r = 90 + 45r Solving 50 + 65r = 90 + 45r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-45r' to each side of the equation. 50 + 65r + -45r = 90 + 45r + -45r Combine like terms: 65r + -45r = 20r 50 + 20r = 90 + 45r + -45r Combine like terms: 45r + -45r = 0 50 + 20r = 90 + 0 50 + 20r = 90 Add '-50' to each side of the equation. 50 + -50 + 20r = 90 + -50 Combine like terms: 50 + -50 = 0 0 + 20r = 90 + -50 20r = 90 + -50 Combine like terms: 90 + -50 = 40 20r = 40 Divide each side by '20'. r = 2 Simplifying r = 2
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