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Simplifying 3x + -2(x + 3) = 9 Reorder the terms: 3x + -2(3 + x) = 9 3x + (3 * -2 + x * -2) = 9 3x + (-6 + -2x) = 9 Reorder the terms: -6 + 3x + -2x = 9 Combine like terms: 3x + -2x = 1x -6 + 1x = 9 Solving -6 + 1x = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 1x = 9 + 6 Combine like terms: -6 + 6 = 0 0 + 1x = 9 + 6 1x = 9 + 6 Combine like terms: 9 + 6 = 15 1x = 15 Divide each side by '1'. x = 15 Simplifying x = 15
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