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Simplifying 9(x + -9) + 7 = 9x + 2 Reorder the terms: 9(-9 + x) + 7 = 9x + 2 (-9 * 9 + x * 9) + 7 = 9x + 2 (-81 + 9x) + 7 = 9x + 2 Reorder the terms: -81 + 7 + 9x = 9x + 2 Combine like terms: -81 + 7 = -74 -74 + 9x = 9x + 2 Reorder the terms: -74 + 9x = 2 + 9x Add '-9x' to each side of the equation. -74 + 9x + -9x = 2 + 9x + -9x Combine like terms: 9x + -9x = 0 -74 + 0 = 2 + 9x + -9x -74 = 2 + 9x + -9x Combine like terms: 9x + -9x = 0 -74 = 2 + 0 -74 = 2 Solving -74 = 2 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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