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Simplifying 3(x + -7) + 1 = 3x + -19 Reorder the terms: 3(-7 + x) + 1 = 3x + -19 (-7 * 3 + x * 3) + 1 = 3x + -19 (-21 + 3x) + 1 = 3x + -19 Reorder the terms: -21 + 1 + 3x = 3x + -19 Combine like terms: -21 + 1 = -20 -20 + 3x = 3x + -19 Reorder the terms: -20 + 3x = -19 + 3x Add '-3x' to each side of the equation. -20 + 3x + -3x = -19 + 3x + -3x Combine like terms: 3x + -3x = 0 -20 + 0 = -19 + 3x + -3x -20 = -19 + 3x + -3x Combine like terms: 3x + -3x = 0 -20 = -19 + 0 -20 = -19 Solving -20 = -19 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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