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Simplifying 2x + 7(2x + 4) = -100 Reorder the terms: 2x + 7(4 + 2x) = -100 2x + (4 * 7 + 2x * 7) = -100 2x + (28 + 14x) = -100 Reorder the terms: 28 + 2x + 14x = -100 Combine like terms: 2x + 14x = 16x 28 + 16x = -100 Solving 28 + 16x = -100 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 16x = -100 + -28 Combine like terms: 28 + -28 = 0 0 + 16x = -100 + -28 16x = -100 + -28 Combine like terms: -100 + -28 = -128 16x = -128 Divide each side by '16'. x = -8 Simplifying x = -8
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