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Simplifying 5x + 7(x + -1) = 5 + 12x Reorder the terms: 5x + 7(-1 + x) = 5 + 12x 5x + (-1 * 7 + x * 7) = 5 + 12x 5x + (-7 + 7x) = 5 + 12x Reorder the terms: -7 + 5x + 7x = 5 + 12x Combine like terms: 5x + 7x = 12x -7 + 12x = 5 + 12x Add '-12x' to each side of the equation. -7 + 12x + -12x = 5 + 12x + -12x Combine like terms: 12x + -12x = 0 -7 + 0 = 5 + 12x + -12x -7 = 5 + 12x + -12x Combine like terms: 12x + -12x = 0 -7 = 5 + 0 -7 = 5 Solving -7 = 5 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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