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Simplifying 5x + -1(3x + -7) = 2x + 1 Reorder the terms: 5x + -1(-7 + 3x) = 2x + 1 5x + (-7 * -1 + 3x * -1) = 2x + 1 5x + (7 + -3x) = 2x + 1 Reorder the terms: 7 + 5x + -3x = 2x + 1 Combine like terms: 5x + -3x = 2x 7 + 2x = 2x + 1 Reorder the terms: 7 + 2x = 1 + 2x Add '-2x' to each side of the equation. 7 + 2x + -2x = 1 + 2x + -2x Combine like terms: 2x + -2x = 0 7 + 0 = 1 + 2x + -2x 7 = 1 + 2x + -2x Combine like terms: 2x + -2x = 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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