SOLUTION: My question is whats substition I keep hearing about? How does it work? Can you tell me how to solve a problem using substition?

Question 529648: My question is whats substition I keep hearing about? How does it work? Can you tell me how to solve a problem using substition?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Sure.
Suppose you have 2 equations with
2 unknowns. It definitely should be
solvable, and one way is by substitution.
Say the equations are
(1)
(2)
-----------------------
From(1), I get
(1)
Now I will Substitute this value of
into equation (2)
(2)
(2)
(2)
(2)
(2)

The solutions are
(10,0) and (5,-5)

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