Question

if you wanted to eliminate the x variable by adding the two equations in the following system, what could be your first step?
2x-y=6
4x-4y=10

Answer 1

@rizwan_uet @qweqwe123123123123111

Answer 2

You can eliminate the x variable by substituting its Y equivalent
Take 2x-y=6
Isolate 2x by adding Y to both sides
2x = 6+y
Get the x equivalency by dividing both sides by 2
x = 3+y/2

Now you can substitute any "x" with "3+y/2"
2x-y=6
becomes
2(3+y/2)-y=6

and
4x-4y=10
becomes
4(3+y/2)-4y=10

The "x" variable has now been eliminated.