Question

solve the system using an augmented matrix
-x-3y=-17
2x+6y=-26
show your work

Answer 1

The answer is 3x+9y=9
    work
-x-3y=17+2x+6y=26
+x          +x
-3y=17+3x+6y=26
+3y          +3y
17+3x+9y=26
-17              -17
 3x+9y=9