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Simplifying (r + 1) = r + 9 Reorder the terms: (1 + r) = r + 9 Remove parenthesis around (1 + r) 1 + r = r + 9 Reorder the terms: 1 + r = 9 + r Add '-1r' to each side of the equation. 1 + r + -1r = 9 + r + -1r Combine like terms: r + -1r = 0 1 + 0 = 9 + r + -1r 1 = 9 + r + -1r Combine like terms: r + -1r = 0 1 = 9 + 0 1 = 9 Solving 1 = 9 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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