Wie lösen Sie das folgende System ?: 2x + 3y = -5, -2x -12y = 4

# 2x + 3y = -5 …………….. (i) #

# -2x-12y = 4 ……………. (ii) #

Hinzufügen #(ich)# und # (ii) #

#implies 2x-2x + 3y-12y = -5 + 4 #

#implies -9y = -1 #

# impliesy = 1/9 #

Stellen # y = 1/9 # im #(ich)#

#implies 2x + 3 * 1/9 = -5 #

#implies 2x + 1/3 = -5 #

#implies 6x + 1 = -15 #

#implies 6x = -16 #

#implies x = -8 / 3 #