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Simplifying 1 + -1(2x + 8) = (x + 9) + -3x Reorder the terms: 1 + -1(8 + 2x) = (x + 9) + -3x 1 + (8 * -1 + 2x * -1) = (x + 9) + -3x 1 + (-8 + -2x) = (x + 9) + -3x Combine like terms: 1 + -8 = -7 -7 + -2x = (x + 9) + -3x Reorder the terms: -7 + -2x = (9 + x) + -3x Remove parenthesis around (9 + x) -7 + -2x = 9 + x + -3x Combine like terms: x + -3x = -2x -7 + -2x = 9 + -2x Add '2x' to each side of the equation. -7 + -2x + 2x = 9 + -2x + 2x Combine like terms: -2x + 2x = 0 -7 + 0 = 9 + -2x + 2x -7 = 9 + -2x + 2x Combine like terms: -2x + 2x = 0 -7 = 9 + 0 -7 = 9 Solving -7 = 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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