Math Problem Statement

|5x| + 5 = 45

Solution

The equation in the image is:

5x+5=45|5x| + 5 = 45

Steps to solve:

  1. Isolate the absolute value: Subtract 5 from both sides: 5x=455|5x| = 45 - 5 5x=40|5x| = 40

  2. Solve the absolute value equation: This gives two possible cases because of the absolute value:

    • Case 1: 5x=405x = 40
    • Case 2: 5x=405x = -40
  3. Solve each case:

    • For 5x=405x = 40: x=405=8x = \frac{40}{5} = 8
    • For 5x=405x = -40: x=405=8x = \frac{-40}{5} = -8

Final Answer:

x=8orx=8x = 8 \quad \text{or} \quad x = -8

Let me know if you want more details or have any questions!

Here are some related questions to practice:

  1. What is the general approach for solving absolute value equations?
  2. How do you solve 3x+7=15|3x + 7| = 15?
  3. What happens if the right-hand side of an absolute value equation is negative?
  4. How can absolute value functions be represented graphically?
  5. How would the equation change if it were 5x+2+5=45|5x + 2| + 5 = 45?

Tip: Always check for extraneous solutions when solving absolute value equations.

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Math Problem Analysis

Mathematical Concepts

Absolute Value
Linear Equations

Formulas

|A| = B where A = B or A = -B

Theorems

Absolute Value Theorem

Suitable Grade Level

Grades 6-8