Lesson 7

# Lesson 7 - Lesson 7 Equation(equality a statement that two...

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Lesson 7 Equation (equality): - a statement that two expressions are equal What is the #1 rule of algebra when solving equations? Be aware of when you are working with equations and when you are working with expressions; equations are solved, while expressions are only simplified. ± ² ³ ± ± ² ´ ± Solving an equation/inequality: - determining all values that result in a true statement - the values that make an equation or an inequality true are called solutions Solving linear equations/inequalities: - isolate the variable using the addition and multiplication principles Example 1: Solve the equations a. µ(¶· ² ¸) ³ ¸(· ³ ¹) ´ º b. »¼½¾ ¿ ´ ¶ ² ¼ À»

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Example 2: For what value of is the number ± a solution of the equation? ²³ ´ µ ¶ · ¸ µ ´ ¹³ ¶ º» ± ¸ ¼ Rational equations: - an equation containing one or more rational expressions - ALWAYS exclude any values that make the denominator zero FIRST - ALWAYS make sure that your solution(s) is/are not
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Lesson 7 - Lesson 7 Equation(equality a statement that two...

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