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Simplifying 3 + -1(2x + 5) = 12 Reorder the terms: 3 + -1(5 + 2x) = 12 3 + (5 * -1 + 2x * -1) = 12 3 + (-5 + -2x) = 12 Combine like terms: 3 + -5 = -2 -2 + -2x = 12 Solving -2 + -2x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -2x = 12 + 2 Combine like terms: -2 + 2 = 0 0 + -2x = 12 + 2 -2x = 12 + 2 Combine like terms: 12 + 2 = 14 -2x = 14 Divide each side by '-2'. x = -7 Simplifying x = -7
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