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Simplifying -4 + 7(x + -1) = 15x + 6 + -8x Reorder the terms: -4 + 7(-1 + x) = 15x + 6 + -8x -4 + (-1 * 7 + x * 7) = 15x + 6 + -8x -4 + (-7 + 7x) = 15x + 6 + -8x Combine like terms: -4 + -7 = -11 -11 + 7x = 15x + 6 + -8x Reorder the terms: -11 + 7x = 6 + 15x + -8x Combine like terms: 15x + -8x = 7x -11 + 7x = 6 + 7x Add '-7x' to each side of the equation. -11 + 7x + -7x = 6 + 7x + -7x Combine like terms: 7x + -7x = 0 -11 + 0 = 6 + 7x + -7x -11 = 6 + 7x + -7x Combine like terms: 7x + -7x = 0 -11 = 6 + 0 -11 = 6 Solving -11 = 6 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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