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Simplifying 9r + 7 = 8r + 5 Reorder the terms: 7 + 9r = 8r + 5 Reorder the terms: 7 + 9r = 5 + 8r Solving 7 + 9r = 5 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. 7 + 9r + -8r = 5 + 8r + -8r Combine like terms: 9r + -8r = 1r 7 + 1r = 5 + 8r + -8r Combine like terms: 8r + -8r = 0 7 + 1r = 5 + 0 7 + 1r = 5 Add '-7' to each side of the equation. 7 + -7 + 1r = 5 + -7 Combine like terms: 7 + -7 = 0 0 + 1r = 5 + -7 1r = 5 + -7 Combine like terms: 5 + -7 = -2 1r = -2 Divide each side by '1'. r = -2 Simplifying r = -2
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