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**2.1 Solving One Step Equations**

Objective: Solve equations using addition and subtraction. Discuss: 2 = 2. What if I add 3 to both sides?

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**2.1 Solving One Step Equations**

Remember: Adding or subtracting ANY number to BOTH Sides does not change the equation. Remember: ADDING undoes SUBTRACTION Remember: SUBTRACTING undoes ADDITION

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**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 other SOLVE: isolate the variable, must be a single POSITIVE variable.

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**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 Solving Whatever I do unto one side of the equals sign; do unto the other.

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**Practice with Examples**

Example 1: Solve x + 13 = 27 Always Check The Solution with Substitution!

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**Practice with Examples**

Example 2: Solve - 7 = b - 37 Always Check The Solution with Substitution!

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**Practice with Examples**

Example 3: Solve 4x= 6.4 Always Check The Solution with Substitution!

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**Practice with Examples**

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**Practice with Examples**

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**Practice with Examples**

Example 6: p. 84 in book Always Check The Solution with Substitution!

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Section 2.1 Homework Homework P – 48 even.

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Solving Equations When do we use solving equations? We use solving equations methods when we know what the problem equals but not what the variable is.

Solving Equations When do we use solving equations? We use solving equations methods when we know what the problem equals but not what the variable is.

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