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Simplifying 4z2 + -7y + 9 = 0 Reorder the terms: 9 + -7y + 4z2 = 0 Solving 9 + -7y + 4z2 = 0 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -7y + -9 + 4z2 = 0 + -9 Reorder the terms: 9 + -9 + -7y + 4z2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -7y + 4z2 = 0 + -9 -7y + 4z2 = 0 + -9 Combine like terms: 0 + -9 = -9 -7y + 4z2 = -9 Add '-4z2' to each side of the equation. -7y + 4z2 + -4z2 = -9 + -4z2 Combine like terms: 4z2 + -4z2 = 0 -7y + 0 = -9 + -4z2 -7y = -9 + -4z2 Divide each side by '-7'. y = 1.285714286 + 0.5714285714z2 Simplifying y = 1.285714286 + 0.5714285714z2
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