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Simplifying 2x + 7y + -9z = 0 Solving 2x + 7y + -9z = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7y' to each side of the equation. 2x + 7y + -7y + -9z = 0 + -7y Combine like terms: 7y + -7y = 0 2x + 0 + -9z = 0 + -7y 2x + -9z = 0 + -7y Remove the zero: 2x + -9z = -7y Add '9z' to each side of the equation. 2x + -9z + 9z = -7y + 9z Combine like terms: -9z + 9z = 0 2x + 0 = -7y + 9z 2x = -7y + 9z Divide each side by '2'. x = -3.5y + 4.5z Simplifying x = -3.5y + 4.5z
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