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Simplifying -4 + 8(x + -1) = 15x + 4 + -7x Reorder the terms: -4 + 8(-1 + x) = 15x + 4 + -7x -4 + (-1 * 8 + x * 8) = 15x + 4 + -7x -4 + (-8 + 8x) = 15x + 4 + -7x Combine like terms: -4 + -8 = -12 -12 + 8x = 15x + 4 + -7x Reorder the terms: -12 + 8x = 4 + 15x + -7x Combine like terms: 15x + -7x = 8x -12 + 8x = 4 + 8x Add '-8x' to each side of the equation. -12 + 8x + -8x = 4 + 8x + -8x Combine like terms: 8x + -8x = 0 -12 + 0 = 4 + 8x + -8x -12 = 4 + 8x + -8x Combine like terms: 8x + -8x = 0 -12 = 4 + 0 -12 = 4 Solving -12 = 4 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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