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Simplifying 4(x + -4) = 28 + 4x Reorder the terms: 4(-4 + x) = 28 + 4x (-4 * 4 + x * 4) = 28 + 4x (-16 + 4x) = 28 + 4x Add '-4x' to each side of the equation. -16 + 4x + -4x = 28 + 4x + -4x Combine like terms: 4x + -4x = 0 -16 + 0 = 28 + 4x + -4x -16 = 28 + 4x + -4x Combine like terms: 4x + -4x = 0 -16 = 28 + 0 -16 = 28 Solving -16 = 28 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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