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Simplifying 2x + 7(x + -3) = 0 Reorder the terms: 2x + 7(-3 + x) = 0 2x + (-3 * 7 + x * 7) = 0 2x + (-21 + 7x) = 0 Reorder the terms: -21 + 2x + 7x = 0 Combine like terms: 2x + 7x = 9x -21 + 9x = 0 Solving -21 + 9x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + 9x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 9x = 0 + 21 9x = 0 + 21 Combine like terms: 0 + 21 = 21 9x = 21 Divide each side by '9'. x = 2.333333333 Simplifying x = 2.333333333
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