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Simplifying x + -2(4x + 7) = 9 + -7x Reorder the terms: x + -2(7 + 4x) = 9 + -7x x + (7 * -2 + 4x * -2) = 9 + -7x x + (-14 + -8x) = 9 + -7x Reorder the terms: -14 + x + -8x = 9 + -7x Combine like terms: x + -8x = -7x -14 + -7x = 9 + -7x Add '7x' to each side of the equation. -14 + -7x + 7x = 9 + -7x + 7x Combine like terms: -7x + 7x = 0 -14 + 0 = 9 + -7x + 7x -14 = 9 + -7x + 7x Combine like terms: -7x + 7x = 0 -14 = 9 + 0 -14 = 9 Solving -14 = 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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