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Simplifying 7x + 5x + -9 = 2(6x + -5) Reorder the terms: -9 + 7x + 5x = 2(6x + -5) Combine like terms: 7x + 5x = 12x -9 + 12x = 2(6x + -5) Reorder the terms: -9 + 12x = 2(-5 + 6x) -9 + 12x = (-5 * 2 + 6x * 2) -9 + 12x = (-10 + 12x) Add '-12x' to each side of the equation. -9 + 12x + -12x = -10 + 12x + -12x Combine like terms: 12x + -12x = 0 -9 + 0 = -10 + 12x + -12x -9 = -10 + 12x + -12x Combine like terms: 12x + -12x = 0 -9 = -10 + 0 -9 = -10 Solving -9 = -10 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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