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Simplifying 3x + -1 = 3(x + 7) Reorder the terms: -1 + 3x = 3(x + 7) Reorder the terms: -1 + 3x = 3(7 + x) -1 + 3x = (7 * 3 + x * 3) -1 + 3x = (21 + 3x) Add '-3x' to each side of the equation. -1 + 3x + -3x = 21 + 3x + -3x Combine like terms: 3x + -3x = 0 -1 + 0 = 21 + 3x + -3x -1 = 21 + 3x + -3x Combine like terms: 3x + -3x = 0 -1 = 21 + 0 -1 = 21 Solving -1 = 21 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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