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Simplifying 2(a + -4) = 4a + -1(2a + 4) Reorder the terms: 2(-4 + a) = 4a + -1(2a + 4) (-4 * 2 + a * 2) = 4a + -1(2a + 4) (-8 + 2a) = 4a + -1(2a + 4) Reorder the terms: -8 + 2a = 4a + -1(4 + 2a) -8 + 2a = 4a + (4 * -1 + 2a * -1) -8 + 2a = 4a + (-4 + -2a) Reorder the terms: -8 + 2a = -4 + 4a + -2a Combine like terms: 4a + -2a = 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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