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Simplifying 4(x + -7) = 2x + 12 + 2x Reorder the terms: 4(-7 + x) = 2x + 12 + 2x (-7 * 4 + x * 4) = 2x + 12 + 2x (-28 + 4x) = 2x + 12 + 2x Reorder the terms: -28 + 4x = 12 + 2x + 2x Combine like terms: 2x + 2x = 4x -28 + 4x = 12 + 4x Add '-4x' to each side of the equation. -28 + 4x + -4x = 12 + 4x + -4x Combine like terms: 4x + -4x = 0 -28 + 0 = 12 + 4x + -4x -28 = 12 + 4x + -4x Combine like terms: 4x + -4x = 0 -28 = 12 + 0 -28 = 12 Solving -28 = 12 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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