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Simplifying 9(4a + -2) = 12(3a + 7) Reorder the terms: 9(-2 + 4a) = 12(3a + 7) (-2 * 9 + 4a * 9) = 12(3a + 7) (-18 + 36a) = 12(3a + 7) Reorder the terms: -18 + 36a = 12(7 + 3a) -18 + 36a = (7 * 12 + 3a * 12) -18 + 36a = (84 + 36a) Add '-36a' to each side of the equation. -18 + 36a + -36a = 84 + 36a + -36a Combine like terms: 36a + -36a = 0 -18 + 0 = 84 + 36a + -36a -18 = 84 + 36a + -36a Combine like terms: 36a + -36a = 0 -18 = 84 + 0 -18 = 84 Solving -18 = 84 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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