Question

Resuelve los sistemas de ecuaciones
C. X+4/5-Y=-1
X-6/5+Y=-1

Answer 1

x + 4/5 - y = -1
x - 6/5 + y = -1

x-y = -1 -4/5 = -5/5 -4/5 = -9/5
x+y = -1 + 6/5 = -5/5 + 6/5 = 1/5

  x-y = -9/5
  x+y = 1/5
2x     = (-9/5) + (1/5) = -8/5
2x = -8/5
x = (-8/5) / 2
x = -8 / (5*2)
x =  -8/10
x = -4/5

x+y = 1/5
y = (1/5) - (-4/5)
 y = (1/5) + (4/5)
y = 5/5
y = 1

Comprobación:
x-y = -9/5
-4/5 - 5/5 = -9/5

Respuesta:
x = -4/5
y = 1