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Simplifying -2(2 + x) = 2(-20 + x) (2 * -2 + x * -2) = 2(-20 + x) (-4 + -2x) = 2(-20 + x) -4 + -2x = (-20 * 2 + x * 2) -4 + -2x = (-40 + 2x) Solving -4 + -2x = -40 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -4 + -2x + -2x = -40 + 2x + -2x Combine like terms: -2x + -2x = -4x -4 + -4x = -40 + 2x + -2x Combine like terms: 2x + -2x = 0 -4 + -4x = -40 + 0 -4 + -4x = -40 Add '4' to each side of the equation. -4 + 4 + -4x = -40 + 4 Combine like terms: -4 + 4 = 0 0 + -4x = -40 + 4 -4x = -40 + 4 Combine like terms: -40 + 4 = -36 -4x = -36 Divide each side by '-4'. x = 9 Simplifying x = 9
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