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Simplifying 4a + -1(3 + 4a) + 7 = 0 4a + (3 * -1 + 4a * -1) + 7 = 0 4a + (-3 + -4a) + 7 = 0 Reorder the terms: -3 + 7 + 4a + -4a = 0 Combine like terms: -3 + 7 = 4 4 + 4a + -4a = 0 Combine like terms: 4a + -4a = 0 4 + 0 = 0 4 = 0 Solving 4 = 0 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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