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Simplifying 4x + -1(7x + 2) = 12 + -3x Reorder the terms: 4x + -1(2 + 7x) = 12 + -3x 4x + (2 * -1 + 7x * -1) = 12 + -3x 4x + (-2 + -7x) = 12 + -3x Reorder the terms: -2 + 4x + -7x = 12 + -3x Combine like terms: 4x + -7x = -3x -2 + -3x = 12 + -3x Add '3x' to each side of the equation. -2 + -3x + 3x = 12 + -3x + 3x Combine like terms: -3x + 3x = 0 -2 + 0 = 12 + -3x + 3x -2 = 12 + -3x + 3x Combine like terms: -3x + 3x = 0 -2 = 12 + 0 -2 = 12 Solving -2 = 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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