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Simplifying 5z2 = 7z2 + 20 Reorder the terms: 5z2 = 20 + 7z2 Solving 5z2 = 20 + 7z2 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-7z2' to each side of the equation. 5z2 + -7z2 = 20 + 7z2 + -7z2 Combine like terms: 5z2 + -7z2 = -2z2 -2z2 = 20 + 7z2 + -7z2 Combine like terms: 7z2 + -7z2 = 0 -2z2 = 20 + 0 -2z2 = 20 Divide each side by '-2'. z2 = -10 Simplifying z2 = -10 Reorder the terms: 10 + z2 = -10 + 10 Combine like terms: -10 + 10 = 0 10 + z2 = 0 The solution to this equation could not be determined.
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