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Simplifying 8r + 5 = -4 + 9r Reorder the terms: 5 + 8r = -4 + 9r Solving 5 + 8r = -4 + 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. 5 + 8r + -9r = -4 + 9r + -9r Combine like terms: 8r + -9r = -1r 5 + -1r = -4 + 9r + -9r Combine like terms: 9r + -9r = 0 5 + -1r = -4 + 0 5 + -1r = -4 Add '-5' to each side of the equation. 5 + -5 + -1r = -4 + -5 Combine like terms: 5 + -5 = 0 0 + -1r = -4 + -5 -1r = -4 + -5 Combine like terms: -4 + -5 = -9 -1r = -9 Divide each side by '-1'. r = 9 Simplifying r = 9
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