Question
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\( 3|3-4 x|=15 x \) What is the solution to the given equation

Ask by Herrera Reyes. in the United States
Feb 03,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The solution to the equation \( 3|3 - 4x| = 15x \) is \( x = \frac{1}{3} \).

Solution

To solve the equation: \[ 3|3 - 4x| = 15x \] **Step 1: Simplify the Equation** Divide both sides by 3 to simplify: \[ |3 - 4x| = 5x \] Since the absolute value is always non-negative, we must have: \[ 5x \geq 0 \quad \Rightarrow \quad x \geq 0 \] **Step 2: Consider the Two Cases for the Absolute Value** 1. **Case 1: \( 3 - 4x \geq 0 \)** \[ 3 - 4x = 5x \] Combine like terms: \[ 3 = 9x \] Solve for \( x \): \[ x = \frac{1}{3} \] **Verification:** \( \frac{1}{3} \geq 0 \) and \( 3 - 4\left(\frac{1}{3}\right) = 3 - \frac{4}{3} = \frac{5}{3} \geq 0 \). This solution is valid. 2. **Case 2: \( 3 - 4x < 0 \)** \[ -(3 - 4x) = 5x \quad \Rightarrow \quad 4x - 3 = 5x \] Solve for \( x \): \[ -3 = x \] **Verification:** \( -3 < 0 \), which does not satisfy \( x \geq 0 \). Therefore, this solution is **invalid**. **Conclusion:** The only valid solution to the equation is: \[ x = \frac{1}{3} \] **Answer:** \( \boxed{\dfrac{1}{3}} \)

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Mind Expander

To solve the equation \( 3|3-4x|=15x \), first divide both sides by 3 to simplify: \( |3-4x|=5x \). Now, we consider two cases for the absolute value. **Case 1:** \( 3-4x = 5x \) Rearranging gives \( 3 = 9x \) or \( x = \frac{1}{3} \). **Case 2:** \( 3-4x = -5x \) Rearranging gives \( 3 = -x \) or \( x = -3 \). So, the solutions to the equation are \( x = \frac{1}{3} \) and \( x = -3 \). Now, let's check if both solutions fit within the context of the original equation. When substituting back, you’ll find both values satisfy the original equation! So, we have two valid solutions. Happy calculating!

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