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Simplifying 2x + -1(7 + -5x) = 7x + 1 2x + (7 * -1 + -5x * -1) = 7x + 1 2x + (-7 + 5x) = 7x + 1 Reorder the terms: -7 + 2x + 5x = 7x + 1 Combine like terms: 2x + 5x = 7x -7 + 7x = 7x + 1 Reorder the terms: -7 + 7x = 1 + 7x Add '-7x' to each side of the equation. -7 + 7x + -7x = 1 + 7x + -7x Combine like terms: 7x + -7x = 0 -7 + 0 = 1 + 7x + -7x -7 = 1 + 7x + -7x Combine like terms: 7x + -7x = 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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