What do we substitute to in substitution method
Answers
The Substitution Method
Step 1: Isolate one of the variables in one equation. Make sure the variable knows it's not personal, it's just algebra. We don't like to hurt any variables' feelings.
Step 2: Substitute the expression from Step 1 into the other equation. Just cram the whole thing right in there. We should now have an equation with only one variable. Solve for it.
Step 3: Take the answer from Step 2 and substitute it back into either one of the original equations. Solve for the other variable.
Step 4: Check the solution in both of the original equations. Mistakes will be caught, quarantined, and given a good scrub down at this stage.
Step 5: Once everything checks out, bask in the warm glow of algebraic achievement (optional).
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To solve an equation figure out what bothers you and then do the same thing on both sides of the equation to get rid of it. To get rid of a radical you take it to a power that will change the rational exponent to a natural number. This will work if the radical is on one side of the equation by itself.