Example

Classifying 4(7d+18)=13(3d2)11d4(7d + 18) = 13(3d - 2) - 11d

When classifying the equation 4(7d+18)=13(3d2)11d4(7d + 18) = 13(3d - 2) - 11d, we begin by distributing the factors on both sides to get 28d+72=39d2611d28d + 72 = 39d - 26 - 11d. Combining the variable terms on the right side simplifies the equation to 28d+72=28d2628d + 72 = 28d - 26. Subtracting 28d28d from both sides completely cancels out the variables, leaving the false statement 72=2672 = -26. As this statement is false regardless of the variable's value, the equation is identified as a contradiction, demonstrating that it has no solution.

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Updated 2026-04-22

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