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Simplifying 2(a + 4) = 4a + 7 + -2a Reorder the terms: 2(4 + a) = 4a + 7 + -2a (4 * 2 + a * 2) = 4a + 7 + -2a (8 + 2a) = 4a + 7 + -2a Reorder the terms: 8 + 2a = 7 + 4a + -2a Combine like terms: 4a + -2a = 2a 8 + 2a = 7 + 2a Add '-2a' to each side of the equation. 8 + 2a + -2a = 7 + 2a + -2a Combine like terms: 2a + -2a = 0 8 + 0 = 7 + 2a + -2a 8 = 7 + 2a + -2a Combine like terms: 2a + -2a = 0 8 = 7 + 0 8 = 7 Solving 8 = 7 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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