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Simplifying (9x + 4) + -1(2x + 2) = 0 Reorder the terms: (4 + 9x) + -1(2x + 2) = 0 Remove parenthesis around (4 + 9x) 4 + 9x + -1(2x + 2) = 0 Reorder the terms: 4 + 9x + -1(2 + 2x) = 0 4 + 9x + (2 * -1 + 2x * -1) = 0 4 + 9x + (-2 + -2x) = 0 Reorder the terms: 4 + -2 + 9x + -2x = 0 Combine like terms: 4 + -2 = 2 2 + 9x + -2x = 0 Combine like terms: 9x + -2x = 7x 2 + 7x = 0 Solving 2 + 7x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 7x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7x = 0 + -2 7x = 0 + -2 Combine like terms: 0 + -2 = -2 7x = -2 Divide each side by '7'. x = -0.2857142857 Simplifying x = -0.2857142857
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