Question

How do you find the solution of the system of equations `3x -2y =5` and `-6x + 4y = 7`?

Answer 1

In this way:

`3x-2y=5`

`-6x+4y=7`

But the second equation can be written in this way, dividing for `-2`:

`3x-2y=-7/2`, and we can notice that the two equations have the first member identical, BUT the second is different!

So the system is impossilble (no solution).