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Simplifying 7x + 2y + 9z = 0 Solving 7x + 2y + 9z = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2y' to each side of the equation. 7x + 2y + -2y + 9z = 0 + -2y Combine like terms: 2y + -2y = 0 7x + 0 + 9z = 0 + -2y 7x + 9z = 0 + -2y Remove the zero: 7x + 9z = -2y Add '-9z' to each side of the equation. 7x + 9z + -9z = -2y + -9z Combine like terms: 9z + -9z = 0 7x + 0 = -2y + -9z 7x = -2y + -9z Divide each side by '7'. x = -0.2857142857y + -1.285714286z Simplifying x = -0.2857142857y + -1.285714286z
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