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Simplifying -11 + 7 = -2(x + 9) Combine like terms: -11 + 7 = -4 -4 = -2(x + 9) Reorder the terms: -4 = -2(9 + x) -4 = (9 * -2 + x * -2) -4 = (-18 + -2x) Solving -4 = -18 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. -4 + 2x = -18 + -2x + 2x Combine like terms: -2x + 2x = 0 -4 + 2x = -18 + 0 -4 + 2x = -18 Add '4' to each side of the equation. -4 + 4 + 2x = -18 + 4 Combine like terms: -4 + 4 = 0 0 + 2x = -18 + 4 2x = -18 + 4 Combine like terms: -18 + 4 = -14 2x = -14 Divide each side by '2'. x = -7 Simplifying x = -7
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