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Simplifying 4(a + -4) = 2a + -1(-2a + 4) Reorder the terms: 4(-4 + a) = 2a + -1(-2a + 4) (-4 * 4 + a * 4) = 2a + -1(-2a + 4) (-16 + 4a) = 2a + -1(-2a + 4) Reorder the terms: -16 + 4a = 2a + -1(4 + -2a) -16 + 4a = 2a + (4 * -1 + -2a * -1) -16 + 4a = 2a + (-4 + 2a) Reorder the terms: -16 + 4a = -4 + 2a + 2a Combine like terms: 2a + 2a = 4a -16 + 4a = -4 + 4a Add '-4a' to each side of the equation. -16 + 4a + -4a = -4 + 4a + -4a Combine like terms: 4a + -4a = 0 -16 + 0 = -4 + 4a + -4a -16 = -4 + 4a + -4a Combine like terms: 4a + -4a = 0 -16 = -4 + 0 -16 = -4 Solving -16 = -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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