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