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Simplifying -3 + 9(x + -1) = 16x + 4 + -7x Reorder the terms: -3 + 9(-1 + x) = 16x + 4 + -7x -3 + (-1 * 9 + x * 9) = 16x + 4 + -7x -3 + (-9 + 9x) = 16x + 4 + -7x Combine like terms: -3 + -9 = -12 -12 + 9x = 16x + 4 + -7x Reorder the terms: -12 + 9x = 4 + 16x + -7x Combine like terms: 16x + -7x = 9x -12 + 9x = 4 + 9x Add '-9x' to each side of the equation. -12 + 9x + -9x = 4 + 9x + -9x Combine like terms: 9x + -9x = 0 -12 + 0 = 4 + 9x + -9x -12 = 4 + 9x + -9x Combine like terms: 9x + -9x = 0 -12 = 4 + 0 -12 = 4 Solving -12 = 4 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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