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Simplifying 3x + -1(8x + 9) = 7 + -5x Reorder the terms: 3x + -1(9 + 8x) = 7 + -5x 3x + (9 * -1 + 8x * -1) = 7 + -5x 3x + (-9 + -8x) = 7 + -5x Reorder the terms: -9 + 3x + -8x = 7 + -5x Combine like terms: 3x + -8x = -5x -9 + -5x = 7 + -5x Add '5x' to each side of the equation. -9 + -5x + 5x = 7 + -5x + 5x Combine like terms: -5x + 5x = 0 -9 + 0 = 7 + -5x + 5x -9 = 7 + -5x + 5x Combine like terms: -5x + 5x = 0 -9 = 7 + 0 -9 = 7 Solving -9 = 7 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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