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Simplifying 13(x + 1) + -4x = 3(3x + 2) + -13 Reorder the terms: 13(1 + x) + -4x = 3(3x + 2) + -13 (1 * 13 + x * 13) + -4x = 3(3x + 2) + -13 (13 + 13x) + -4x = 3(3x + 2) + -13 Combine like terms: 13x + -4x = 9x 13 + 9x = 3(3x + 2) + -13 Reorder the terms: 13 + 9x = 3(2 + 3x) + -13 13 + 9x = (2 * 3 + 3x * 3) + -13 13 + 9x = (6 + 9x) + -13 Reorder the terms: 13 + 9x = 6 + -13 + 9x Combine like terms: 6 + -13 = -7 13 + 9x = -7 + 9x Add '-9x' to each side of the equation. 13 + 9x + -9x = -7 + 9x + -9x Combine like terms: 9x + -9x = 0 13 + 0 = -7 + 9x + -9x 13 = -7 + 9x + -9x Combine like terms: 9x + -9x = 0 13 = -7 + 0 13 = -7 Solving 13 = -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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