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Simplifying -4a + 7 = -4a + 3 + 6 Reorder the terms: 7 + -4a = -4a + 3 + 6 Reorder the terms: 7 + -4a = 3 + 6 + -4a Combine like terms: 3 + 6 = 9 7 + -4a = 9 + -4a Add '4a' to each side of the equation. 7 + -4a + 4a = 9 + -4a + 4a Combine like terms: -4a + 4a = 0 7 + 0 = 9 + -4a + 4a 7 = 9 + -4a + 4a Combine like terms: -4a + 4a = 0 7 = 9 + 0 7 = 9 Solving 7 = 9 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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