Lecture notes for Section 1.3

1. Section 1.3 Solving Linear Equations A.notebook July 29, 2009
Section 1.3 Solving Linear Equations
Vocabulary Equation: A statement where two
expressions are equal.
Example: 3x + 5 = 7; x2 = 25
Linear Equation: An equation
that can be written in the form
ax = b where a ≠ 0.
Example: 3x = ­9; 4x ­ 5 = 3
Equivalent: equations are
equivalent if they have the same
solution.
Example: x = 5 and x ­ 1 = 4 are
equivalent.
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2. Section 1.3 Solving Linear Equations A.notebook July 29, 2009
Solving
Equations
5n + 11 = 7n ­ 9
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3. Section 1.3 Solving Linear Equations A.notebook July 29, 2009
4(3x ­ 5) = ­2(­ x + 8) ­ 6x
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4. Section 1.3 Solving Linear Equations A.notebook July 29, 2009
Homework Section 1.3 Worksheet #2 ­ 36 even
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