Solution
we have the following equation given:
-2x -3y = -10
-3x +y =7
We have the ordered pair (-1,4)
We can replace in the first equation and we got:
-2*-1 -3(4)=2 -12 =-10
And in the second one we have:
-3(-1) +4= 3+4=7
So then we can conclude that (-1,4) is a solution of the system