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Simplifying -2[x + 7] = 28 Reorder the terms: -2[7 + x] = 28 [7 * -2 + x * -2] = 28 [-14 + -2x] = 28 Solving -14 + -2x = 28 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -2x = 28 + 14 Combine like terms: -14 + 14 = 0 0 + -2x = 28 + 14 -2x = 28 + 14 Combine like terms: 28 + 14 = 42 -2x = 42 Divide each side by '-2'. x = -21 Simplifying x = -21
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