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Simplifying -5x + -2(x + 2) = 81 Reorder the terms: -5x + -2(2 + x) = 81 -5x + (2 * -2 + x * -2) = 81 -5x + (-4 + -2x) = 81 Reorder the terms: -4 + -5x + -2x = 81 Combine like terms: -5x + -2x = -7x -4 + -7x = 81 Solving -4 + -7x = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -7x = 81 + 4 Combine like terms: -4 + 4 = 0 0 + -7x = 81 + 4 -7x = 81 + 4 Combine like terms: 81 + 4 = 85 -7x = 85 Divide each side by '-7'. x = -12.14285714 Simplifying x = -12.14285714
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