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I am not sure what the question is, but heres my 2 cents.
You know what? Never mind. I don't get the question at all. In order to use substitution, you must totally isolate a variable to 1 side, and only have the variable on 1 side. Then you substitute it. Ex:
2y+4x-5z=45
2z+x-4y=54
Isolate x in the 2nd equation, as it is easier:
x=54-2z+4y
Now, substitute it:
2y+4(54-2z+4y)-5z=45
Got it? I might have done something wrong.
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Solve the following system of equations using sustitution x6y-4 x-2y 28?
To solve a system of equations, you need equations (number phrases with equal signs).
How can you solve a system of equations?
The answer depends on whether they are linear, non-linear, differential or other types of equations.
What are the disadvantages to using equations?
Its harder to solve the equations with grande numbers
How do you solve systems of equations by using elimination?
Multiply every term in both equations by any number that is not 0 or 1, and has not been posted in our discussion already. Then solve the new system you have created using elimination or substitution method:6x + 9y = -310x - 6y = 58
Is using four equations to solve a problem called a four-order system?
No. The word "order" has various meanings in math, but I don't think this is one of them.
