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Simplifying 12 = 12 + -2x Add '-12' to each side of the equation. 12 + -12 = 12 + -12 + -2x Combine like terms: 12 + -12 = 0 0 = 12 + -12 + -2x Combine like terms: 12 + -12 = 0 0 = 0 + -2x 0 = -2x Solving 0 = -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. 0 + 2x = -2x + 2x Remove the zero: 2x = -2x + 2x Combine like terms: -2x + 2x = 0 2x = 0 Divide each side by '2'. x = 0 Simplifying x = 0
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