Question

Solve this que by cross multi method 3x-y=3 and 9x-3y=9

Answer 1

Answer:

y=6       x=3

Step-by-step explanation:

3x-y=3        9x-3y=9

y=3-3x

9x-3(3-3x)=9

9x-9+9=9

9x-18=9

9x=27        x=3

9(3)-3y=9

27-3y=9

-3y=9-27

-3y=-18

y=6