Odgovor:
# x = 1 # i # Y = 0 #
Obrazloženje:
#COLOR (bijeli) (xx) x = y-1 #, # 2 x + y = -2 #
#COLOR (bijeli) xx2x + y = -2 <=> x = (- y-2) / 2 #
# => Y-1 = (- y-2) / 2 #
# => Boja (crvena) (2xx) (y-1) = boja (crvena) (2xx) (- y-2) / 2 #
# => 2y-2color (crvena) (+ 2) = - y-2color (crvena) (+ 2) *
# => Y = 0 #
#COLOR (bijeli) (xx) x = y-1 #
#COLOR (bijela) (xxx) = boja (plava) 0-1 #
#COLOR (bijeli) (xxx) = - 1 #