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