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Simplifying 6x + -21 = 5x + 17 + -1(-1x) Reorder the terms: -21 + 6x = 5x + 17 + -1(-1x) Remove parenthesis around (-1x) -21 + 6x = 5x + 17 + -1 * -1x Multiply -1 * -1 -21 + 6x = 5x + 17 + 1x Reorder the terms: -21 + 6x = 17 + 5x + 1x Combine like terms: 5x + 1x = 6x -21 + 6x = 17 + 6x Add '-6x' to each side of the equation. -21 + 6x + -6x = 17 + 6x + -6x Combine like terms: 6x + -6x = 0 -21 + 0 = 17 + 6x + -6x -21 = 17 + 6x + -6x Combine like terms: 6x + -6x = 0 -21 = 17 + 0 -21 = 17 Solving -21 = 17 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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