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Simplifying -1(x + 5) + -7 = x Reorder the terms: -1(5 + x) + -7 = x (5 * -1 + x * -1) + -7 = x (-5 + -1x) + -7 = x Reorder the terms: -5 + -7 + -1x = x Combine like terms: -5 + -7 = -12 -12 + -1x = x Solving -12 + -1x = 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. -12 + -1x + -1x = x + -1x Combine like terms: -1x + -1x = -2x -12 + -2x = x + -1x Combine like terms: x + -1x = 0 -12 + -2x = 0 Add '12' to each side of the equation. -12 + 12 + -2x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -2x = 0 + 12 -2x = 0 + 12 Combine like terms: 0 + 12 = 12 -2x = 12 Divide each side by '-2'. x = -6 Simplifying x = -6
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