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Simplifying 5 + 2(x + -1) = 12 Reorder the terms: 5 + 2(-1 + x) = 12 5 + (-1 * 2 + x * 2) = 12 5 + (-2 + 2x) = 12 Combine like terms: 5 + -2 = 3 3 + 2x = 12 Solving 3 + 2x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 2x = 12 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 12 + -3 2x = 12 + -3 Combine like terms: 12 + -3 = 9 2x = 9 Divide each side by '2'. x = 4.5 Simplifying x = 4.5
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