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Simplifying 3x + -1(x + 7) = 2x + 8 Reorder the terms: 3x + -1(7 + x) = 2x + 8 3x + (7 * -1 + x * -1) = 2x + 8 3x + (-7 + -1x) = 2x + 8 Reorder the terms: -7 + 3x + -1x = 2x + 8 Combine like terms: 3x + -1x = 2x -7 + 2x = 2x + 8 Reorder the terms: -7 + 2x = 8 + 2x Add '-2x' to each side of the equation. -7 + 2x + -2x = 8 + 2x + -2x Combine like terms: 2x + -2x = 0 -7 + 0 = 8 + 2x + -2x -7 = 8 + 2x + -2x Combine like terms: 2x + -2x = 0 -7 = 8 + 0 -7 = 8 Solving -7 = 8 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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