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Simplifying 2a + -1 = 2a + 1 Reorder the terms: -1 + 2a = 2a + 1 Reorder the terms: -1 + 2a = 1 + 2a Add '-2a' to each side of the equation. -1 + 2a + -2a = 1 + 2a + -2a Combine like terms: 2a + -2a = 0 -1 + 0 = 1 + 2a + -2a -1 = 1 + 2a + -2a Combine like terms: 2a + -2a = 0 -1 = 1 + 0 -1 = 1 Solving -1 = 1 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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