Problem: The solution of the equations ​2x−3y=74x−6y=20​ is:
Answer Choices:
A. ​x=18y=12​
B. ​x=0y=0​
C. There is no solution
D. There is an unlimited number of solutions
E. ​x=8y=5​
Solution:
The system is inconsistent; hence, no solution;
or
graphically, we have two parallel lines;
or
∣∣∣∣∣​2−34−6​∣∣∣∣∣​=0
hence no solution.