Question

7. 4x - Зу = 8, 18х - Зу = 29​

Answer 1

4x-3y=8........(1)

18x-3y=29....(2)

subtract (1) from (2)

    18x-3y=29

 (-) 4x-3y=8

     -    +    -

     --------------

      14x=21

      

then x=3/2 

substitute this in eq. (1)

4(3/2)-3y=8

y= -2/3