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Simplifying 9(x + -9) + 3 = 2x + 7(x + 2) Reorder the terms: 9(-9 + x) + 3 = 2x + 7(x + 2) (-9 * 9 + x * 9) + 3 = 2x + 7(x + 2) (-81 + 9x) + 3 = 2x + 7(x + 2) Reorder the terms: -81 + 3 + 9x = 2x + 7(x + 2) Combine like terms: -81 + 3 = -78 -78 + 9x = 2x + 7(x + 2) Reorder the terms: -78 + 9x = 2x + 7(2 + x) -78 + 9x = 2x + (2 * 7 + x * 7) -78 + 9x = 2x + (14 + 7x) Reorder the terms: -78 + 9x = 14 + 2x + 7x Combine like terms: 2x + 7x = 9x -78 + 9x = 14 + 9x Add '-9x' to each side of the equation. -78 + 9x + -9x = 14 + 9x + -9x Combine like terms: 9x + -9x = 0 -78 + 0 = 14 + 9x + -9x -78 = 14 + 9x + -9x Combine like terms: 9x + -9x = 0 -78 = 14 + 0 -78 = 14 Solving -78 = 14 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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