Question

-2x+y=-4
X=-y+5



2x+y=20
6x-5y=12

Answer 1

the 3 one
Simplifying
2x + -1y = 20
 Solving
2x + -1y = 20
  Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'y' to each side of the equation.
 2x + -1y + y = 20 + y
  Combine like terms: -1y + y = 0 2x + 0 = 20 + y 2x = 20 + y Divide each side by '2'. x = 10 + 0.5y
  Simplifying x = 10 + 0.5y