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Simplifying 40z2 + 80x + -140 = 0 Reorder the terms: -140 + 80x + 40z2 = 0 Solving -140 + 80x + 40z2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '140' to each side of the equation. -140 + 80x + 140 + 40z2 = 0 + 140 Reorder the terms: -140 + 140 + 80x + 40z2 = 0 + 140 Combine like terms: -140 + 140 = 0 0 + 80x + 40z2 = 0 + 140 80x + 40z2 = 0 + 140 Combine like terms: 0 + 140 = 140 80x + 40z2 = 140 Add '-40z2' to each side of the equation. 80x + 40z2 + -40z2 = 140 + -40z2 Combine like terms: 40z2 + -40z2 = 0 80x + 0 = 140 + -40z2 80x = 140 + -40z2 Divide each side by '80'. x = 1.75 + -0.5z2 Simplifying x = 1.75 + -0.5z2
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