Question

Help please?

Evaluate Dx

-4x+7y=1
25=2x+5y

Answer 1

What? Do you mean solve for x?

Answer 2

Thanks, it says Dx.

Maybe it means solve for X in today's math terms, so that is what I will show you how to do, but I might be answering the wrong question. Is that ok?

Answer 3

Yes thats fine, thank you.

Answer 4

Rewrite the bottom equation so that all of the like terms line up.
Like this
ax +b y = A
cx + dy = B

where the letters are the constants

Answer 5

Rewrite the bottom equation so that all of the like terms line up.

They will look like this: (if my typing is accurate)

-4x +7 y = 1
2x + 5y = 25

Answer 6

I want to eliminate a variable by adding or subtracting one equation from the other, so that variable will go to zero.

These two equations won"t work as they are written, but if I multiple the bottom equation by 2 ON BOTH sides. What will the bottom equation look like?

I will wait for your answer. If I get no response in 5 minutes or a idk, I will move on.