-6x - 2y =-40
-7x -2y =-44
been trying for a long time and can't get the answer
\(6x +2y= 40\)
\(-7x -2y = -44\)
add:
\(6x-7x= 40-44\)
\(-x = -4\)
result:
\(x = 4\)
\(y = 8\)
It's -40
+47 
