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Simplifying (2x + -4) + -1(9x + 2) + -1(9x + -2) = 0 Reorder the terms: (-4 + 2x) + -1(9x + 2) + -1(9x + -2) = 0 Remove parenthesis around (-4 + 2x) -4 + 2x + -1(9x + 2) + -1(9x + -2) = 0 Reorder the terms: -4 + 2x + -1(2 + 9x) + -1(9x + -2) = 0 -4 + 2x + (2 * -1 + 9x * -1) + -1(9x + -2) = 0 -4 + 2x + (-2 + -9x) + -1(9x + -2) = 0 Reorder the terms: -4 + 2x + -2 + -9x + -1(-2 + 9x) = 0 -4 + 2x + -2 + -9x + (-2 * -1 + 9x * -1) = 0 -4 + 2x + -2 + -9x + (2 + -9x) = 0 Reorder the terms: -4 + -2 + 2 + 2x + -9x + -9x = 0 Combine like terms: -4 + -2 = -6 -6 + 2 + 2x + -9x + -9x = 0 Combine like terms: -6 + 2 = -4 -4 + 2x + -9x + -9x = 0 Combine like terms: 2x + -9x = -7x -4 + -7x + -9x = 0 Combine like terms: -7x + -9x = -16x -4 + -16x = 0 Solving -4 + -16x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -16x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -16x = 0 + 4 -16x = 0 + 4 Combine like terms: 0 + 4 = 4 -16x = 4 Divide each side by '-16'. x = -0.25 Simplifying x = -0.25
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