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Simplifying -20 + -9x = 0 Solving -20 + -9x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -9x = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -9x = 0 + 20 -9x = 0 + 20 Combine like terms: 0 + 20 = 20 -9x = 20 Divide each side by '-9'. x = -2.222222222 Simplifying x = -2.222222222
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