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