Example

Classifying 8z=8z+9-8z = -8z + 9

To accurately classify the linear equation 8z=8z+9-8z = -8z + 9, apply the properties of equality to isolate the variable. Adding 8z8z to both sides of the equation to group the variable terms forces the complete elimination of zz, leaving the strictly false numerical statement 0=90 = 9. Because this statement is never true for any possible value of zz, the original equation must be a contradiction that has no solution.

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Updated 2026-04-22

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Ch.2 Solving Linear Equations - Intermediate Algebra @ OpenStax

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