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1. 9/9/2012 1 6.1 Solving Addition and Subtraction Equations LPS
2. 9/9/2012 2 What You’ll learn: You’ll learn to solve addition and subtraction equations
Subtraction Property of Equality
Addition Property of Equality
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4. 9/9/2012 4 Solving Equations Equation
Examples
Variable
Steps in solving an equation
Solution
5. 9/9/2012 5 Subtraction Property of Equality Words: If you subtract the same number from each side of an equation, then the two sides remain equal.
Symbols: Arithmetic Algebra
4=4 a=b
4-3=4-3 a – c = b - c
6. 9/9/2012 6 Addition Property of Equality Words: If you add the same number to each side of an equation, then the two sides remain equal.
Symbols: Arithmetic Algebra
5=5 a=b
5+4 = 5+4 a + c = b + c
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8. 9/9/2012 8 x + 1.2 = 3.5
X + 1.2 = 3.5
x = 2.3
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