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