Cevap:
#(-26,-45)#
Açıklama:
# 4x = 3y + 31 #-------(1)
• y = 2x + 7 #----------(2)
(2) yi (1)
# 4x = 3 (2x + 7) + 31 #
# 4x = 6x + 21 + 31 #
# 4x = 6x + 52 #
# 2x = -52 #
# x = -26 #
denklemi koymak (2)
• y = 2 (-26) + 7 #
• y = -52 + 7 #
• y = -52 + 7 #
• y = -45 #