Question

Solve the simultaneous equations
7 x + 4 y = 26
5 x + 4 y = 14
whats x and y

Answer 1

Answer:

 [2]    7x = 4y + 26

 [2]    x = 4y/7 + 26/7

// Plug this in for variable  x  in equation [1]

  [1]    5•(4y/7+26/7) - 4y = 14

  [1]     - 8y/7 = -32/7

  [1]     - 8y = -32

// Solve equation [1] for the variable  y  

  [1]    8y = 32  

  [1]    y = 4  

// By now we know this much :

   x = 4y/7+26/7

   y = 4

// Use the  y  value to solve for  x  

   x = (4/7)(4)+26/7 = 6

Step-by-step explanation: