Answer: The required expression for the number of boys in the math class is [tex]b=g-8.[/tex]
Step-by-step explanation: Given that Sophie's math class has 6 fewer Boys than girls and there are g girls.
We are to write an expression for the number of boys in the math class.
Let b represents the number of boys in the math class.
Then, according to the given information, we get
[tex]b=g-8.[/tex]
Thus, the required expression for the number of boys in the math class is [tex]b=g-8.[/tex]