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Solution: Solve for x in the following equations: 27^x = 9^y and 81^y 3^-x = 243

(Last Updated On: December 8, 2017)

Solve for x in the following equations: 27^x  = 9^y and 81^y 3^-x = 243

Problem Statement: ECE Board April 1993

Solve for x in the following equations.
27^x = 9^y
81^y 3^-x = 243

  • A. 1
  • B. 1.5
  • C. 2
  • D. 2.5

Problem Answer:

The value of x is equal to 1.

Solution:

Solution: Solve for x in the following equations: 27^x  = 9^y and 81^y 3^-x = 243

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