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Simplifying 8r + -2 = 5 + 9r Reorder the terms: -2 + 8r = 5 + 9r Solving -2 + 8r = 5 + 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. -2 + 8r + -9r = 5 + 9r + -9r Combine like terms: 8r + -9r = -1r -2 + -1r = 5 + 9r + -9r Combine like terms: 9r + -9r = 0 -2 + -1r = 5 + 0 -2 + -1r = 5 Add '2' to each side of the equation. -2 + 2 + -1r = 5 + 2 Combine like terms: -2 + 2 = 0 0 + -1r = 5 + 2 -1r = 5 + 2 Combine like terms: 5 + 2 = 7 -1r = 7 Divide each side by '-1'. r = -7 Simplifying r = -7
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