Answer:

Step-by-step explanation:
24y = 7
Our primary objective here is to get y on it's own side, without any numbers attached.
Since a 24 is attached to the y, we have to divide the 24y by 24.


Remember that whatever we do to one side, we MUST do to the other.

Since
can't be simplified, that would be our answer.
Please let me know if you need help with anything else. :)
10x^2-170x is the answer I think you're looking for

If I understood correctly and didn't make any mistakes...
Standard: 784,000
Word: seven hundred eighty-four thousand
Expanded: (700,000) + (80,000) + (4,000)