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Simplifying -4(5 + -4x) = x + 1 (5 * -4 + -4x * -4) = x + 1 (-20 + 16x) = x + 1 Reorder the terms: -20 + 16x = 1 + x Solving -20 + 16x = 1 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -20 + 16x + -1x = 1 + x + -1x Combine like terms: 16x + -1x = 15x -20 + 15x = 1 + x + -1x Combine like terms: x + -1x = 0 -20 + 15x = 1 + 0 -20 + 15x = 1 Add '20' to each side of the equation. -20 + 20 + 15x = 1 + 20 Combine like terms: -20 + 20 = 0 0 + 15x = 1 + 20 15x = 1 + 20 Combine like terms: 1 + 20 = 21 15x = 21 Divide each side by '15'. x = 1.4 Simplifying x = 1.4
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