The solution and the answer are in the photograph.
The answer is y = 100
To get this answer, you add 17 to both sides to undo the "minus 17" that is happening on the right side.
83 = y-17
83+17 = y-17+17 ... add 17 to both sides
100 = y
y = 100
If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84
Hope this helps. :)
Ok I can help just tell me the problem
1024 is the answer to this problem.