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Simplifying 3x + -7 = 3x + 1 + -1 Reorder the terms: -7 + 3x = 3x + 1 + -1 Reorder the terms: -7 + 3x = 1 + -1 + 3x Combine like terms: 1 + -1 = 0 -7 + 3x = 0 + 3x -7 + 3x = 3x Add '-3x' to each side of the equation. -7 + 3x + -3x = 3x + -3x Combine like terms: 3x + -3x = 0 -7 + 0 = 3x + -3x -7 = 3x + -3x Combine like terms: 3x + -3x = 0 -7 = 0 Solving -7 = 0 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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