Multiple Choice

A production supervisor is verifying a labor-cost equation: 9x−5−8x−6=79x - 5 - 8x - 6 = 7. To verify if x=18x = 18 is the correct solution, the supervisor substitutes 18 for xx and simplifies the left side. What numerical value must the left side simplify to in order to confirm that x=18x = 18 is the correct solution?

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Updated 2026-09-17

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