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Simplifying 2(2x + -4) + -1(x + 4) = 0 Reorder the terms: 2(-4 + 2x) + -1(x + 4) = 0 (-4 * 2 + 2x * 2) + -1(x + 4) = 0 (-8 + 4x) + -1(x + 4) = 0 Reorder the terms: -8 + 4x + -1(4 + x) = 0 -8 + 4x + (4 * -1 + x * -1) = 0 -8 + 4x + (-4 + -1x) = 0 Reorder the terms: -8 + -4 + 4x + -1x = 0 Combine like terms: -8 + -4 = -12 -12 + 4x + -1x = 0 Combine like terms: 4x + -1x = 3x -12 + 3x = 0 Solving -12 + 3x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 3x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + 3x = 0 + 12 3x = 0 + 12 Combine like terms: 0 + 12 = 12 3x = 12 Divide each side by '3'. x = 4 Simplifying x = 4
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