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Simplifying z2 + 5x + 4 = 0 Reorder the terms: 4 + 5x + z2 = 0 Solving 4 + 5x + z2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 5x + -4 + z2 = 0 + -4 Reorder the terms: 4 + -4 + 5x + z2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5x + z2 = 0 + -4 5x + z2 = 0 + -4 Combine like terms: 0 + -4 = -4 5x + z2 = -4 Add '-1z2' to each side of the equation. 5x + z2 + -1z2 = -4 + -1z2 Combine like terms: z2 + -1z2 = 0 5x + 0 = -4 + -1z2 5x = -4 + -1z2 Divide each side by '5'. x = -0.8 + -0.2z2 Simplifying x = -0.8 + -0.2z2
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