If x = 2, y = -- 1 is a solution of binary linear equation AX by = -- 2, find 2A + B-6
Substitute x = 2, y = -- 1 into ax by = -- 2
Then 2A + B = -- 2
Then 2A + B-6 is - 8
Substitute x = 2, y = -- 1 into ax by = -- 2
Then 2A + B = -- 2
Then 2A + B-6 is - 8