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Simplifying x + -1(2x + 4) = -7 Reorder the terms: x + -1(4 + 2x) = -7 x + (4 * -1 + 2x * -1) = -7 x + (-4 + -2x) = -7 Reorder the terms: -4 + x + -2x = -7 Combine like terms: x + -2x = -1x -4 + -1x = -7 Solving -4 + -1x = -7 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 + -1x = -7 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = -7 + 4 -1x = -7 + 4 Combine like terms: -7 + 4 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3
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