Question 1115100
You are given that a function is defined in two DIFFERENT ways;
but as described, that is contradictory.


2x-3 is a variable expression.
7 is a single constant.


Not good.  Either your f has one definition or it has the other definition.  Not both in the same problem or exercise.


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Are you REALLY looking for an answer to something like this:
f(x)=2x-3 and h(x)=7.
For what x will f(x) and h(x) be equal?

{{{f(x)=h(x)}}}
{{{2x-3=7}}}
{{{2x=10}}}
{{{x=5}}}