Question 1206699
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Wording in your text is INCORRECT.


A correct wording is THIS (my editing is <U>underlined</U>)


<pre>
    Gabor is w years old. His mother is 4 times <U>as old as Gabor</U>. 
    His father is three years older than his mother. 
    Write an expression to represent the age of Gabor's mother as a function of w
</pre>

Since you compose/create the problem on your own (as I see it from your text),
learn on HOW TO do it in a right way,.



Otherwise, your writing is ambiguous in English, which is &nbsp;{{{highlight(highlight(unacceptable))}}} &nbsp;for Math problems.



If you do not make it in a canonic way, your writing will create 
scandals much greater than this problem really costs/deserves.