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Simplifying 21x + -5 + -15x + 3 = 19x + -3 + -13x + 13 Reorder the terms: -5 + 3 + 21x + -15x = 19x + -3 + -13x + 13 Combine like terms: -5 + 3 = -2 -2 + 21x + -15x = 19x + -3 + -13x + 13 Combine like terms: 21x + -15x = 6x -2 + 6x = 19x + -3 + -13x + 13 Reorder the terms: -2 + 6x = -3 + 13 + 19x + -13x Combine like terms: -3 + 13 = 10 -2 + 6x = 10 + 19x + -13x Combine like terms: 19x + -13x = 6x -2 + 6x = 10 + 6x Add '-6x' to each side of the equation. -2 + 6x + -6x = 10 + 6x + -6x Combine like terms: 6x + -6x = 0 -2 + 0 = 10 + 6x + -6x -2 = 10 + 6x + -6x Combine like terms: 6x + -6x = 0 -2 = 10 + 0 -2 = 10 Solving -2 = 10 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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