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Simplifying 2z2 + 9x + 4 = 0 Reorder the terms: 4 + 9x + 2z2 = 0 Solving 4 + 9x + 2z2 = 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 + 9x + -4 + 2z2 = 0 + -4 Reorder the terms: 4 + -4 + 9x + 2z2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9x + 2z2 = 0 + -4 9x + 2z2 = 0 + -4 Combine like terms: 0 + -4 = -4 9x + 2z2 = -4 Add '-2z2' to each side of the equation. 9x + 2z2 + -2z2 = -4 + -2z2 Combine like terms: 2z2 + -2z2 = 0 9x + 0 = -4 + -2z2 9x = -4 + -2z2 Divide each side by '9'. x = -0.4444444444 + -0.2222222222z2 Simplifying x = -0.4444444444 + -0.2222222222z2
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