Question

3. Solve using cross multiplication method:
x + y=7
2x - 3y = 11​

Answer 1

Answer:

Given Equation is x + y = 7

                                    x = 7 - y      --------- (1)

(2) 2x - 3y = 11

     2(7 - y) - 3y = 11

     14 - 2y - 3y = 11

      14 - 5y = 11

           -5y = 11 - 14

          -5y = -3

             y = 

Substitute y =  in (1), we get

x = 7 - 

  

   = 

   = 

Therefore the value of x = , y = 

Hope this helps!