Math Problem Statement

∣3x−10∣−2= 5x

Solution

We can solve the equation:

3x102=5x|3x - 10| - 2 = 5x

Step 1: Isolate the absolute value term.

Add 2 to both sides:

3x10=5x+2|3x - 10| = 5x + 2

Step 2: Solve the absolute value equation.

For an absolute value equation, we have two cases to consider:

  1. Positive Case: 3x10=5x+23x - 10 = 5x + 2 Solve for xx:

    3x5x=2+103x - 5x = 2 + 10 2x=12-2x = 12 x=6x = -6

  2. Negative Case: 3x10=(5x+2)3x - 10 = -(5x + 2) Simplify the right-hand side:

    3x10=5x23x - 10 = -5x - 2 Solve for xx:

    3x+5x=2+103x + 5x = -2 + 10 8x=88x = 8 x=1x = 1

Step 3: Check both solutions.

For x=6x = -6: 3(6)102=5(6)|3(-6) - 10| - 2 = 5(-6) 18102=30|-18 - 10| - 2 = -30 282=30| -28 | - 2 = -30 282=30(False)28 - 2 = -30 \quad \text{(False)} Thus, x=6x = -6 is not a valid solution.

For x=1x = 1: 3(1)102=5(1)|3(1) - 10| - 2 = 5(1) 3102=5|3 - 10| - 2 = 5 72=5| -7 | - 2 = 5 72=5(True)7 - 2 = 5 \quad \text{(True)} Thus, x=1x = 1 is the valid solution.

Final Answer:

x=1x = 1

Would you like more details or have any further questions?

Here are 5 related questions to expand this concept:

  1. How do you solve an equation with two absolute value terms?
  2. What happens if the solution for xx involves no valid solutions?
  3. How do you graph the function f(x)=3x102f(x) = |3x - 10| - 2?
  4. How do you solve quadratic equations involving absolute values?
  5. How do transformations of absolute value functions affect their graph?

Tip: Always check your solutions when solving absolute value equations, as not all will satisfy the original equation.

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Math Problem Analysis

Mathematical Concepts

Absolute Value Equations
Linear Equations

Formulas

|a| = b implies a = b or a = -b

Theorems

Properties of Absolute Value

Suitable Grade Level

Grades 8-10