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Simplifying 3 + 10r = 8 + 9r Solving 3 + 10r = 8 + 9r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-9r' to each side of the equation. 3 + 10r + -9r = 8 + 9r + -9r Combine like terms: 10r + -9r = 1r 3 + 1r = 8 + 9r + -9r Combine like terms: 9r + -9r = 0 3 + 1r = 8 + 0 3 + 1r = 8 Add '-3' to each side of the equation. 3 + -3 + 1r = 8 + -3 Combine like terms: 3 + -3 = 0 0 + 1r = 8 + -3 1r = 8 + -3 Combine like terms: 8 + -3 = 5 1r = 5 Divide each side by '1'. r = 5 Simplifying r = 5
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