Question

solve by substitution method
x-y=9,11/2( x-y )=1​

Answer 1

Answer:

x- y= 9 .......(1)

11/2(x-y)=1 ...........(2)

from (1)

x= 9+y

now, substitute the value of x in (2)

11/2(9+y-y)=1

11/18=1

on cross multiplying

11=18

18-11=0

7