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Simplifying x + -4(2 + x) = 7 + -3x x + (2 * -4 + x * -4) = 7 + -3x x + (-8 + -4x) = 7 + -3x Reorder the terms: -8 + x + -4x = 7 + -3x Combine like terms: x + -4x = -3x -8 + -3x = 7 + -3x Add '3x' to each side of the equation. -8 + -3x + 3x = 7 + -3x + 3x Combine like terms: -3x + 3x = 0 -8 + 0 = 7 + -3x + 3x -8 = 7 + -3x + 3x Combine like terms: -3x + 3x = 0 -8 = 7 + 0 -8 = 7 Solving -8 = 7 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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