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