I have no idea tbh. I will try to find how to do it and help you!
2 x 10 4th power - 7 3rd power
2 x 10,000 - 343
20,000 - 343
19,657
I think this is the answer to your problem. Hope this helped!
-TTL
The answer is going to 25.13
4w-7k=28
-7k+4w+-4w=28+-4w
-7k=-4w+28
-7k/-7=-4w+28/-7
k=4/7w-4
:)
