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Simplifying 3(2x + 7) + -9 = 18x + 3 + -12x + 2 Reorder the terms: 3(7 + 2x) + -9 = 18x + 3 + -12x + 2 (7 * 3 + 2x * 3) + -9 = 18x + 3 + -12x + 2 (21 + 6x) + -9 = 18x + 3 + -12x + 2 Reorder the terms: 21 + -9 + 6x = 18x + 3 + -12x + 2 Combine like terms: 21 + -9 = 12 12 + 6x = 18x + 3 + -12x + 2 Reorder the terms: 12 + 6x = 3 + 2 + 18x + -12x Combine like terms: 3 + 2 = 5 12 + 6x = 5 + 18x + -12x Combine like terms: 18x + -12x = 6x 12 + 6x = 5 + 6x Add '-6x' to each side of the equation. 12 + 6x + -6x = 5 + 6x + -6x Combine like terms: 6x + -6x = 0 12 + 0 = 5 + 6x + -6x 12 = 5 + 6x + -6x Combine like terms: 6x + -6x = 0 12 = 5 + 0 12 = 5 Solving 12 = 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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