solve the system by substitution .

Question

anonymous · Answer

attachment

mertsj · Answer

How about solving the third equation for either x or z and substituting in the other two equations?

anonymous · Answer

wel how do you do it the elimination way?

mertsj · Answer

Well which is it elimination or substitution?

anonymous · Answer

i thought subsitution was when you plug in numbers t find it but i can see how it would be the same thing

mertsj · Answer

2x+2z=4
Solve that for x and tell me what you get

anonymous · Answer

ill just solve the whole thing and tell you what i get ;)

anonymous · Answer

so does z =25?

mertsj · Answer

no

anonymous · Answer

oh my goodness i dont know how to do this one lol

anonymous · Answer

solve the first equation for something and then plug it into the second one

anonymous · Answer

so do i like times both equations i use by 2 and 1?

mertsj · Answer

Well, then why don't you do what I said to do.  I said it twice.  This is the 3rd and final time.  Solve the third equation for x.  Put that name for x into the second equation.

anonymous · Answer

rude much.

anonymous · Answer

his way works to

mertsj · Answer

how can you help someone who refuses to do what you say when you know it is the simplest way to get the solution?

mertsj · Answer

That is what is rude.  Ask for help.  Someone takes time to help you and then to help you again  and then to help you again.  Then you call them rude!!!  What is wrong with this picture?