I think chris sold 167996451 games. i think the expression would be:
504504504
—————— = average
3
average - 171717 = chris’s sale
So what u do (-72828282)+(-7382828)=(-73838)+n=(-839288n)
Answer
1/xy
Reduce the fraction with 4
Simplify that expression
Simplify it again
Use community property to reorder the terms
And you get 1/xy