Question 272145
4x + 10y = –28 ___ 2x + 5y = -14 ___ 2x = -14 - 5y


6x + 7y = 6 ___ 3(2x) + 7y = 6


substituting ___ 3(-14 - 5y) + 7y = 6 ___ -42 - 15y + 7y = 6


-8y = 48 ___ y = -6


substituting ___ 2x = -14 - 5(-6) ___ x = 8


independent ___ because a unique solution was found