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Simplifying -2x + -21 = 2x + 11 Reorder the terms: -21 + -2x = 2x + 11 Reorder the terms: -21 + -2x = 11 + 2x Solving -21 + -2x = 11 + 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. -21 + -2x + -2x = 11 + 2x + -2x Combine like terms: -2x + -2x = -4x -21 + -4x = 11 + 2x + -2x Combine like terms: 2x + -2x = 0 -21 + -4x = 11 + 0 -21 + -4x = 11 Add '21' to each side of the equation. -21 + 21 + -4x = 11 + 21 Combine like terms: -21 + 21 = 0 0 + -4x = 11 + 21 -4x = 11 + 21 Combine like terms: 11 + 21 = 32 -4x = 32 Divide each side by '-4'. x = -8 Simplifying x = -8
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