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Simplifying 2x + -1(7 + -1x) + 5x + 7 = 8x + 2 2x + (7 * -1 + -1x * -1) + 5x + 7 = 8x + 2 2x + (-7 + 1x) + 5x + 7 = 8x + 2 Reorder the terms: -7 + 7 + 2x + 1x + 5x = 8x + 2 Combine like terms: -7 + 7 = 0 0 + 2x + 1x + 5x = 8x + 2 2x + 1x + 5x = 8x + 2 Combine like terms: 2x + 1x = 3x 3x + 5x = 8x + 2 Combine like terms: 3x + 5x = 8x 8x = 8x + 2 Reorder the terms: 8x = 2 + 8x Add '-8x' to each side of the equation. 8x + -8x = 2 + 8x + -8x Combine like terms: 8x + -8x = 0 0 = 2 + 8x + -8x Combine like terms: 8x + -8x = 0 0 = 2 + 0 0 = 2 Solving 0 = 2 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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