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