One of the algebraic methods for solving systems of equations is to solve by substitution. It is based on the idea that if a = b, and b = 25, then you can also say that a = 25.
Sounds simple, right? Imagine a more complicated scenario:
therefore
And then the equation can be solved for x.
Resources:
- Notes
Assignment
- p475 #1, 3, 4-9, 11, 13, 14, 17-20, 25 *21 22 24
Things you should be able to do after today:
- solve a system of equations by substitution
| File | Description | File size |
|---|---|---|
 10.9.1.notes.substitution.pdf | 469 kB |