Antwoord:
# (X, y) = (3,5) #
Uitleg:
Als #color (wit) ("XXX") y = 1 / 3x + 4 #
en #color (wit) ("XX") y = 2x-1 #
dan
#color (wit) ("XXX") 2x-1 = 1 / 3x + 4 #
#color (wit) ("XXX") 5 / 3x = 5 #
#color (wit) ("XXX") x = 1 #
#color (wit) ("XXXXXXX") #en dit te vervangen #rarr y = 1 / 3x + 4 #
#color (wit) ("XXXXXXXXXXXXXXXXXXXX") # geeft # y = 5 #
