Solved on Sep 25, 2023

Solve the equation 3x4=18|3x-4|=18 to find the possible values of xx.

STEP 1

Assumptions1. The equation is 3x4=18|3x -4| =18 . We are looking for the solutions for xx that satisfy this equation

STEP 2

The absolute value function x|x| is defined asx={xif x0xif x<0|x| =\begin{cases}x & \text{if } x \geq0 \\ -x & \text{if } x <0\end{cases} So, the equation x4=18|x -4| =18 can be split into two cases1. x4=18x -4 =18 when x40x -4 \geq0
2. x4=18x -4 = -18 when x4<0x -4 <0

STEP 3

Let's solve the first case 3x=183x - =18
Add to both sides of the equation to isolate 3x3x on one side.
3x=18+3x =18 +

STEP 4

Calculate the right side of the equation.
3x=223x =22

STEP 5

Divide both sides of the equation by3 to solve for xx.
x=223x = \frac{22}{3}

STEP 6

Now, let's solve the second case 3x4=183x -4 = -18
Add4 to both sides of the equation to isolate 3x3x on one side.
3x=18+43x = -18 +4

STEP 7

Calculate the right side of the equation.
3x=143x = -14

STEP 8

Divide both sides of the equation by3 to solve for xx.
x=143x = \frac{-14}{3}So, the solutions to the equation 3x4=18|3x -4| =18 are x=223x = \frac{22}{3} and x=143x = \frac{-14}{3}.

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