Question

Compare between (x+1)/(y+1)=4/5 and (x-5)/(y-5)=1/2

Answer 1

Answer:

I hope you understand my answer by above pic

Answer 2

Answer:

Step-by-step explanation:

(i) (x + 1) (y + 1) = 4/5

xy + x + y + 1 = 4/5

5( xy + x + y + 1) = 4

5xy + 5x + 5y + 5 = 4

5xy + 5x + 5y = 4 - 5

5xy + 5x + 5y =  -1  

(ii) (x - 5)  (y - 5) = 1/2

   xy - 5x - 5y + 25 = 1/2

  2( xy - 5x - 5y +25) = 1

 2xy - 10x - 10y + 50 = 1

 2xy - 10x - 10y = -49

Comparing :-

5xy + 5x + 5y =  -1  

2xy - 10x - 10y = -49