# 3x-2y = 7 ………. (i) #
# 11x + 3y + 7 = 0 impliceert 11x + 3y = -7 ………… (ii) #
Vermenigvuldigen #(ik)# door #3# en (ii) door 2 en toevoegen
# Implies9x-6j = 21 #
# 22x + 6y = -14 #
Door toevoeging hebben we
# 31x + 0 = 7 #
#implies x = 7/31 #
Leggen # X = 7/31 # in #(ik)#
#implies 3 (7/31) -2y = 7 #
#implies 21 / 31-2y = 7 #
#implies 2y = 21 / 31-7 #
#implies 2y = (21-217) / 31 #
#implies 2y = -196 / 31 #
#implies y = -98 / 31 #
