SOLUTION: Simplify the rational expression, if possible. Identify any excluded values. {{{(k-3)/(7k-21)}}}

SOLUTION: Simplify the rational expression, if possible. Identify any excluded values. {{{(k-3)/(7k-21)}}}

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Question 1005083: Simplify the rational expression, if possible. Identify any excluded values.

Answer by ikleyn(52798)   (Show Source): You can put this solution on YOUR website!
.
=     (this ratio is defined if k=/= 3; otherwise it is not defined)

=     (reduce by (k-3) the numerator and the denominator)

= .

So,    is defined everywhere except k=3, and

= everywhere where the ratio in the left side is defined.

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