what is x if 2 x - y = 14 and y = 2 ?
substitute y by 2 in 2 x - y = 14 2 x - 2 = 14 2 x = 16 if we substitute x by 8 , we have 2 ( 8 ) = 16 . hence x = 8 correct answer b
subtract(subtract(14, 2), multiply(2, 2))