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