Math Problem Statement

solve -3|x + 3| > -2. give your answer in interval notation. enter one if the inequality does not have a solution

Solution

To solve the inequality 3x+3>2-3|x + 3| > -2, follow these steps:

Step 1: Isolate the absolute value

First, divide both sides of the inequality by 3-3. Remember to flip the inequality sign since you are dividing by a negative number:

x+3<23|x + 3| < \frac{-2}{-3}

This simplifies to:

x+3<23|x + 3| < \frac{2}{3}

Step 2: Solve the inequality

The expression x+3<23|x + 3| < \frac{2}{3} implies that the quantity inside the absolute value is within 23\frac{2}{3} units of 0. Therefore, you can write two inequalities:

23<x+3<23-\frac{2}{3} < x + 3 < \frac{2}{3}

Step 3: Isolate xx in the compound inequality

Subtract 3 from all parts of the inequality:

233<x<233-\frac{2}{3} - 3 < x < \frac{2}{3} - 3

Now, simplify both sides:

2393<x<2393-\frac{2}{3} - \frac{9}{3} < x < \frac{2}{3} - \frac{9}{3}

113<x<73-\frac{11}{3} < x < -\frac{7}{3}

Step 4: Write the solution in interval notation

The solution to the inequality is:

(113,73)\left(-\frac{11}{3}, -\frac{7}{3}\right)

This interval represents all xx values that satisfy the inequality.

Let me know if you need any more details!


Here are five related questions you might find useful:

  1. How do you solve inequalities involving absolute values with a greater than sign?
  2. What happens if the inequality was 3x+32-3|x + 3| \geq -2?
  3. How can you graph absolute value inequalities?
  4. What is the interpretation of an absolute value inequality on a number line?
  5. How do you solve compound inequalities involving absolute values?

Tip: Always flip the inequality sign when dividing or multiplying both sides by a negative number, especially when dealing with absolute values.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Absolute Value

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12