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Simplifying -3x + 7 + -6x + 9 = -9x Reorder the terms: 7 + 9 + -3x + -6x = -9x Combine like terms: 7 + 9 = 16 16 + -3x + -6x = -9x Combine like terms: -3x + -6x = -9x 16 + -9x = -9x Add '9x' to each side of the equation. 16 + -9x + 9x = -9x + 9x Combine like terms: -9x + 9x = 0 16 + 0 = -9x + 9x 16 = -9x + 9x Combine like terms: -9x + 9x = 0 16 = 0 Solving 16 = 0 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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