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Simplifying 11x + -1(-1 + -1x) = 12x + 66 11x + (-1 * -1 + -1x * -1) = 12x + 66 11x + (1 + 1x) = 12x + 66 Reorder the terms: 1 + 11x + 1x = 12x + 66 Combine like terms: 11x + 1x = 12x 1 + 12x = 12x + 66 Reorder the terms: 1 + 12x = 66 + 12x Add '-12x' to each side of the equation. 1 + 12x + -12x = 66 + 12x + -12x Combine like terms: 12x + -12x = 0 1 + 0 = 66 + 12x + -12x 1 = 66 + 12x + -12x Combine like terms: 12x + -12x = 0 1 = 66 + 0 1 = 66 Solving 1 = 66 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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