Question

Metodo de Sustitución 1) -3x+2y=2 2) 2x-2y=-4

Answer 1

1) -3x+2y=2

2) 2x-2y=-4
    2x = -4 + 2y
     x = (-4 + 2y)/2
    
-3( -4 +2y)/2 +2y = 2
(12 - 6y ) / 2 + 2y = 2
(12 -6y + 4y) /2 = 2
12 -2y = 4
12 - 4 = 2y
y = 8/2
y= 4

x = (-4 + 2 * 4)/2
x = (-4 + 8) /2
x = 4/2
x = 2