Presentation on theme: "2.1 Solving One Step Equations"— Presentation transcript:
1 2.1 Solving One Step Equations Objective: Solve equations using addition and subtraction.Discuss:2 = 2. What if I add 3 to both sides?
2 2.1 Solving One Step Equations Remember: Adding or subtracting ANY number to BOTH Sides does not change the equation.Remember: ADDING undoes SUBTRACTIONRemember: SUBTRACTING undoes ADDITION
3 2.1 Solving One Step Equations SIMPLIFY: Combine like terms and/or distribute on the left and right if NEEDED.SORT: variables on one side, numbers on the otherSOLVE: isolate the variable, must be a single POSITIVE variable.
4 2.1 Solving One Step Equations GOAL: ISOLATE the variable.That means get it by itself on one side with numbers and/or other variables on the other side.To do this, follow the GOLDEN RULE of Equation SolvingWhatever I do unto one side of the equals sign; do unto the other.
5 Practice with Examples Example 1: Solve x + 13 = 27Always Check The Solution with Substitution!
6 Practice with Examples Example 2: Solve - 7 = b - 37Always Check The Solution with Substitution!
7 Practice with Examples Example 3: Solve 4x= 6.4Always Check The Solution with Substitution!