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Simplifying 6x + -9x + -15 = -3x + 4 + -15 Reorder the terms: -15 + 6x + -9x = -3x + 4 + -15 Combine like terms: 6x + -9x = -3x -15 + -3x = -3x + 4 + -15 Reorder the terms: -15 + -3x = 4 + -15 + -3x Combine like terms: 4 + -15 = -11 -15 + -3x = -11 + -3x Add '3x' to each side of the equation. -15 + -3x + 3x = -11 + -3x + 3x Combine like terms: -3x + 3x = 0 -15 + 0 = -11 + -3x + 3x -15 = -11 + -3x + 3x Combine like terms: -3x + 3x = 0 -15 = -11 + 0 -15 = -11 Solving -15 = -11 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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