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Simplifying -4(7 + 7x) = -8x + -8 (7 * -4 + 7x * -4) = -8x + -8 (-28 + -28x) = -8x + -8 Reorder the terms: -28 + -28x = -8 + -8x Solving -28 + -28x = -8 + -8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8x' to each side of the equation. -28 + -28x + 8x = -8 + -8x + 8x Combine like terms: -28x + 8x = -20x -28 + -20x = -8 + -8x + 8x Combine like terms: -8x + 8x = 0 -28 + -20x = -8 + 0 -28 + -20x = -8 Add '28' to each side of the equation. -28 + 28 + -20x = -8 + 28 Combine like terms: -28 + 28 = 0 0 + -20x = -8 + 28 -20x = -8 + 28 Combine like terms: -8 + 28 = 20 -20x = 20 Divide each side by '-20'. x = -1 Simplifying x = -1
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