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Simplifying 4(x + -1) = 4x + -1(-4) Reorder the terms: 4(-1 + x) = 4x + -1(-4) (-1 * 4 + x * 4) = 4x + -1(-4) (-4 + 4x) = 4x + -1(-4) Multiply -1 * -4 -4 + 4x = 4x + 4 Reorder the terms: -4 + 4x = 4 + 4x Add '-4x' to each side of the equation. -4 + 4x + -4x = 4 + 4x + -4x Combine like terms: 4x + -4x = 0 -4 + 0 = 4 + 4x + -4x -4 = 4 + 4x + -4x Combine like terms: 4x + -4x = 0 -4 = 4 + 0 -4 = 4 Solving -4 = 4 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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