4x – 9y = 7
–2x + 3y = 4
what number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation?

By 2.

Step-by-step explanation:

You need to eliminated the x-terms, so the first step is to focus only in those terms.

So yo have 4x and -2x, since you are thinking in eliminate then you have this equation>

Note that we dont put the x variable, since we are studying its coefficients in the equations system.

Solving for K, Gives us that K=2

So.

Multiplying the second equation by 2 results in

When you put them together, it gives you the following

and the final equation is

giving you the answer for y, that is

x+14

step-by-step explanation:

answer by yourhope:

hi! : )

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: )