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Simplifying -12 + -9x = 53 Solving -12 + -9x = 53 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -9x = 53 + 12 Combine like terms: -12 + 12 = 0 0 + -9x = 53 + 12 -9x = 53 + 12 Combine like terms: 53 + 12 = 65 -9x = 65 Divide each side by '-9'. x = -7.222222222 Simplifying x = -7.222222222
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