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