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Simplifying 5(r + 9) + -5r + 9 = 0 Reorder the terms: 5(9 + r) + -5r + 9 = 0 (9 * 5 + r * 5) + -5r + 9 = 0 (45 + 5r) + -5r + 9 = 0 Reorder the terms: 45 + 9 + 5r + -5r = 0 Combine like terms: 45 + 9 = 54 54 + 5r + -5r = 0 Combine like terms: 5r + -5r = 0 54 + 0 = 0 54 = 0 Solving 54 = 0 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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