Question

9x-4y=200 and 7x-3y = 200 using substitution methods​

Answer 1

Answer:the answer is x=200 and y=600

Step-by-step explanation:

9x-4y=200  - *3

7x-3y=200   =*4

27x-12y=600

28x-12y=800

-      +      -

-x           =-200

  x=200

9(200)-4y=200

1800-4y=2oo

         -4y=200-1800

          -4y=-1600

              y=1600/4

               y=400

         

Answer 2

Step-by-step explanation:

here is your answer and once try to solve it yourself