Question

please solve this
This is for class 9​

Answer 1

Step-by-step explanation:

(i) x - y = 0

=> x = y

(ii) y = 2x

=> 2x = y

=> x = y/2

(iii) 2x + 4 = y

=> 2x = y - 4

=> x = (y - 4)/2

or x = y/2 - 4/2

or x = y/2 - 2

Hope this helps.......