How can I combine two equations with the same variables?

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SUMMARY

The discussion centers on the mathematical principle that if two functions, z=f(x,y) and z=g(x,y), are equal to the same variable z, then the functions themselves must be equal: f(x,y) = g(x,y). This principle is grounded in the transitive property of equality, which states that if two things are both equal to a third thing, they are equal to each other. The participants confirm this fundamental concept without introducing any additional complexity or alternative methods.

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  • Understanding of basic algebraic principles
  • Familiarity with functions and variables
  • Knowledge of the transitive property of equality
  • Basic problem-solving skills in mathematics
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  • Explore the implications of the transitive property in more complex equations
  • Study how to manipulate and combine functions in algebra
  • Learn about function composition and its applications
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Students, educators, and anyone interested in foundational algebra concepts, particularly those dealing with functions and equations.

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I have z=f(x,y) also z=g(x,y). How do I combine these two expressions. Help me out
 
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"Things both equal to a third thing are equal to each other".

If z= f(x,y) and z= g(x,y) then f(x,y)= g(x,y)!
 

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