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Simplifying 3(x + -7) + -1x = 2x + -2 Reorder the terms: 3(-7 + x) + -1x = 2x + -2 (-7 * 3 + x * 3) + -1x = 2x + -2 (-21 + 3x) + -1x = 2x + -2 Combine like terms: 3x + -1x = 2x -21 + 2x = 2x + -2 Reorder the terms: -21 + 2x = -2 + 2x Add '-2x' to each side of the equation. -21 + 2x + -2x = -2 + 2x + -2x Combine like terms: 2x + -2x = 0 -21 + 0 = -2 + 2x + -2x -21 = -2 + 2x + -2x Combine like terms: 2x + -2x = 0 -21 = -2 + 0 -21 = -2 Solving -21 = -2 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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