Use the substitution method to solve the following system of equations.

x + 2y – z = 7
4x – y + 3z = –2
2x + 2y – z = 9
Answer
(2, 1, 3)
(–2, –1, 3)
(2, 1, –3)
(–2, 1, –3)

Question

Use the substitution method to solve the following system of equations.

x + 2y – z = 7
4x – y + 3z = –2
2x + 2y – z = 9
Answer
		(2, 1, 3)
		(–2, –1, 3)
		(2, 1, –3)
		(–2, 1, –3)

hero · Answer

This one just takes a little more time than I am willing to give

anonymous · Answer

ok

hero · Answer

actually, I would be more interested in helping you, but I am trying to answer questions and troubleshoot my internet connection simultaneously. I'm a little frustrated right now.

anonymous · Answer

lol , its okay . i found my answer ... its the third one least i think so because all i did was plug them in

hero · Answer

Yup, that's one way to do it. Just plug em in

hero · Answer

make sure you plug them in to all three to make sure x,y,z works for all three equations. If you don't you'll be in trouble.