Question

What are the types of method to solve substitution equations with 3 variables?

Answer 1

I just want the Names.

Answer 2

Or it's simply known as "substution method"?

Answer 3

substitution*

Answer 4

trigonometric substitution
basic substitution
complex substitution
??

Answer 5

Gaussian-Elimination, Cramer's Rule, L-U breakdown.
There are countless ways to do these. Take a Linear Algebra course if you want to know more.

Answer 6

o_O

Answer 7

x – 2y + z = 0
2x – 3y – 4z = –9
x + 2y – 5z = 0

Part 1: Explain, in complete sentences, which method you would use to solve the following system of equations. (1 point)

Part 2: Explain why you chose that method (1 point)

Answer 8

i solve them by eliminating z.. and so on..

Answer 9

I would use method of elimination.
Thats what thats called hehe

Answer 10

what about part 2?

"WHY" would u use it? LOL

Answer 11

you can see that adding eqn.1 to eqn.3 the y's will disappear. and you'll have 2x-4z=0 which will help you in the next step.

Answer 12

I'd use Gaussian elimination because the method is elegant, very transparent and avoids the confusion that sometimes arise when using substitution (which equation have I substituted into already?; what equation should I use next?).