Question

The system of equations is coincident.

What are the missing values?

4x+5y=8
8x +___ y=_____

Answer 1

Notice that \(8=2\times4\).

Answer 2

I should multiple the variables by that?

Answer 3

You are correct.

Answer 4

So would it be 8x+10y=32?

Answer 5

How did you get \(32\)?

Answer 6

I said I should multiple the variables and I took 4x8 and got 32.

Answer 7

When I told you to notice that \(2\times4=8\), I want you to notice that perhaps \(2\) is the common factor. Therefore, you are right that \(2\times5=10\), but not that \(2\times8=32\).

Answer 8

I've got it 8x+10y=16!

Answer 9

You are right.