Question

Use elimination using multiplication to solve 2x-3/4y=-7 X+1/2y=0

Answer 1

Answer:

{x,y}={-2,4}d

Step-by-step explanation:

Solve equation [2] for the variable  y

 [2]    y = -2x

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

  [1]    8x - 3•(-2x) = -28

  [1]    14x = -28

// Solve equation [1] for the variable  x

  [1]    14x = - 28

  [1]    x = - 2

// By now we know this much :

   x = -2

   y = -2x

// Use the  x  value to solve for  y

   y = -2(-2) = 4