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