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Simplifying 3(2x + -7) = 5x + 7 + x Reorder the terms: 3(-7 + 2x) = 5x + 7 + x (-7 * 3 + 2x * 3) = 5x + 7 + x (-21 + 6x) = 5x + 7 + x Reorder the terms: -21 + 6x = 7 + 5x + x Combine like terms: 5x + x = 6x -21 + 6x = 7 + 6x Add '-6x' to each side of the equation. -21 + 6x + -6x = 7 + 6x + -6x Combine like terms: 6x + -6x = 0 -21 + 0 = 7 + 6x + -6x -21 = 7 + 6x + -6x Combine like terms: 6x + -6x = 0 -21 = 7 + 0 -21 = 7 Solving -21 = 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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