回答: #y = -2,2 / 3、-2/3、2# 説明: x = -1 #4(-1)-3y = 2# #-4-3y = 2# #3y = -6# #y = -2# x = 1 #4(1)-3y = 2# #4-3y = 2# #3y = 2# #y = 2/3# x = 0 #4(0)-3y = 2# #-3y = 2# #y = -2 / 3# x = 2 #4(2)-3y = 2# #8-3y = 2# #3y = 6# #y = 2#