This week in math 10 I learned how to use substitution in equations

ex.  x – y = 3          2x – 5y = -7

There are 5 Steps:

Step 1: Choose the simplest equation and isolate on of the variables.

Step 2: Substitute the answer from step one into the other equation

 

 

 

 

 

 

 

 

 

 

Step 3: Solve the single variable equation

Step 4: Substitute the answer from step 4 into the original equation in step one to find the value of the other variable

Step 5: Verify