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3.1 Two-Step Equations. An equation is like a seesaw. What does that mean?. Your goal is to isolate the variable. In order to isolate the variable, you must undo whatever is being done . In order to isolate the variable, you must undo whatever is being done.
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An equation is like a seesaw. What does that mean?
In order to isolate the variable, you must undo whatever is being done.
In order to isolate the variable, you must undo whatever is being done. • Since you are undoing things, they must be done backwards.
DOING UNDOING P E MD AS AS MD E P Remember UNDOINGmeans solving equations
Doing things backwards means reverse the order of operations. 1. Undo any addition or subtraction. 2. Undo any multiplication or division. 3. Undo any exponents.