Question 722929
Put (x,y) = (8,-1) into the two equations and check.
Is (2*8+3*(-1) = 13)?
Is (16 - 3 = 13)?
Is (13 = 13)? Yes
Is (8 -(-1) = 9)?
Is (9 = 9)? Yes
Answer: Yes, (8,-1) is the solution (and only solution) to the given system of equations.