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Simplifying 7x + -9y + z + -13 = 0 Reorder the terms: -13 + 7x + -9y + z = 0 Solving -13 + 7x + -9y + z = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 7x + -9y + 13 + z = 0 + 13 Reorder the terms: -13 + 13 + 7x + -9y + z = 0 + 13 Combine like terms: -13 + 13 = 0 0 + 7x + -9y + z = 0 + 13 7x + -9y + z = 0 + 13 Combine like terms: 0 + 13 = 13 7x + -9y + z = 13 Add '9y' to each side of the equation. 7x + -9y + 9y + z = 13 + 9y Combine like terms: -9y + 9y = 0 7x + 0 + z = 13 + 9y 7x + z = 13 + 9y Add '-1z' to each side of the equation. 7x + z + -1z = 13 + 9y + -1z Combine like terms: z + -1z = 0 7x + 0 = 13 + 9y + -1z 7x = 13 + 9y + -1z Divide each side by '7'. x = 1.857142857 + 1.285714286y + -0.1428571429z Simplifying x = 1.857142857 + 1.285714286y + -0.1428571429z
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