Question

Help me asap 3x+y=5 2x-2y=-2 elimination

Answer 1

SOLUTION

{x,y} = {1,2}

EXPLANATION

y = -3x + 5

// Plug 2 in for variable  y  in equation

  2x - 2•(-3x+5) = -2

   8x = 8

// Solve equation for the variable  x  

  8x = 8

   x = 1

By now we know this much :

   x = 1

   y = -3x+5

// Use the  x  value to solve for  y  

   y = -3(1)+5 = 2

Answer 2

Multiply the first equation by 2 to get 6x+2y=10. Add the two equations to eliminate y.
6x+2y=10
2x-2y=-2
—————
8x=8
x=1
Substitute x=1 into one equation to get y value
3(1)+y=5
y=2
Answer: x=1, y=2