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Simplifying 3x + -7x + -13 = -4x + 4 + -13 Reorder the terms: -13 + 3x + -7x = -4x + 4 + -13 Combine like terms: 3x + -7x = -4x -13 + -4x = -4x + 4 + -13 Reorder the terms: -13 + -4x = 4 + -13 + -4x Combine like terms: 4 + -13 = -9 -13 + -4x = -9 + -4x Add '4x' to each side of the equation. -13 + -4x + 4x = -9 + -4x + 4x Combine like terms: -4x + 4x = 0 -13 + 0 = -9 + -4x + 4x -13 = -9 + -4x + 4x Combine like terms: -4x + 4x = 0 -13 = -9 + 0 -13 = -9 Solving -13 = -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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