Question

Find all the variables.
2B + i+K = 8
2i -k=2
4B +6i=20

Answer 1

Help?

Answer 2

http://www.wolframalpha.com/input/?i=2x%2By%2Bz%3D+8%2C+2y-z%3D2%2C+4x%2B6y%3D20

Answer 3

not helpful. I need to find x,y,z but that surely is not the answer

Answer 4

you can get rid of the k in the second equation, write \(k=2i-2\)
plug that in the the first equation get
\[2b+i+2i-2=8\] or just
\[2b+3i=10\]

Answer 5

but in this case there isnt x,y,z just three different variables

Answer 6

then solve
\[2b+3i=10\\
4b+6i=20\]you see that there are an infinite number of solutions because it s=is the same line

Answer 7

??????????? so confused still

Answer 8

mk guess i wont get help.