Suppose a,b,c,d are integers and a DOES NOT equal c. Suppose that x is a real number that satisfies the equation:(adsbygoogle = window.adsbygoogle || []).push({});

(ax+b)/(cx+d)=1

Must x be rational? If so, express x as a ratio of two integers.

I have no idea how to begin this problem.

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# Homework Help: Discrete math question: Prove x is rational.

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