Question

x - 2y = - 18 :2x - y = 9​

Answer 1

x-2y=-18.........eq 1.

2x - y= 9............eq.2

from 1

x=-18 +2y

putting x=-18+2y in eq2

2(-18+2y)- y=9

-36 +4y-y. = 9

3y=. 45

y=15

now putting the value of y in 1.

x-30=-18

x=12.